when one molecule of sucrose is burned with oxygen to make carbon dioxide and water, how many carbon dioxides are made? hint, carbon dioxide is co2.
Answers
One molecule of sucrose is burned with oxygen to make carbon dioxide and water.
What is sucrose?
The components of the disaccharide sugar sucrose are glucose and fructose. It is produced naturally by plants and is the main component of white sugar. C12H22O11 is the chemical formula for it.
To extract and refine sucrose for human use, either sugarcane or sugar beet are employed. Crushing the cane creates raw sugar, which is subsequently delivered to other sectors to be refined into pure sucrose. Sugar mills are usually located in tropical regions near to sugarcane plantations.
C12H22O11 + 12O2 = 12CO2 + 11H2O
When one molecule of sucrose is burnt, we get 12 carbon dioxide molecules.
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Related Questions
The impulse experienced by a body is equivalent to its change in: a. velocity b. kinetic energy c. momentum. d. None of the above choices are valid. In an isolated system of particles the momentum of the system is conserved regardless of th number of collisions that occur with in the system. a. true b. false uouo sea s a. true b. false . In an elastic collision the kinetic energy of the eellision before and after the collision will no change
Answers
The impulse experienced by a body is equivalent to its change in momentum. Therefore, the valid answer for the given question is option C.
The impulse experienced by an object can be defined as the change in momentum of the object that occurs when an unbalanced force acts on it.In an isolated system of particles, the momentum of the system is conserved regardless of the number of collisions that occur within the system. Hence, the valid answer for this question is option A, true.In an elastic collision, the kinetic energy of the collision before and after the collision will not change.
Therefore, the valid answer for this question is option A, true. In an elastic collision, both the momentum and kinetic energy of the colliding particles are conserved. The total kinetic energy of the colliding particles before the collision will be equal to the total kinetic energy of the colliding particles after the collision.
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How does knowing the
Solubility of substances help
us in daily life?
Answers
Answer:
making drinks, purifying water
Explanation:
calculate δh∘ for the following reaction: ch3oh(l)+o2(g) → hco2h(l)+h2o(l)
Answers
The standard enthalpy change (ΔH∘) for the reaction:
CH3OH(l) + O2(g) → HCO2H(l) + H2O(l)
can be calculated using standard enthalpies of formation (ΔHf∘) of reactants and products. The equation for the calculation of ΔH∘ is:
The standard enthalpy change (ΔH∘) for the given reaction is -738.8 kJ/mol.
ΔH∘ = ΣΔHf∘ (products) - ΣΔHf∘ (reactants.where Σ means the sum of, and ΔHf∘ is the standard enthalpy of formation.The standard enthalpies of formation for the given compounds are:
ΔHf∘(CH3OH) = -238.6 kJ/mol
ΔHf∘(O2) = 0 kJ/mol
ΔHf∘(HCO2H) = -691.0 kJ/mol
ΔHf∘(H2O) = -285.8 kJ/mol
Using the equation above, we can calculate ΔH∘ for the reaction:
ΔH∘ = [ΔHf∘(HCO2H) + ΔHf∘(H2O)] - [ΔHf∘(CH3OH) + ΔHf∘(O2)]
ΔH∘ = [(-691.0 kJ/mol) + (-285.8 kJ/mol)] - [(-238.6 kJ/mol) + (0 kJ/mol)]
ΔH∘ = -977.4 kJ/mol + 238.6 kJ/mol
ΔH∘ = -738.8 kJ/mol.
Therefore, the standard enthalpy change (ΔH∘) for the given reaction is -738.8 kJ/mol.
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When investigating whether or not the substance dibromoethane (ethylene dibro- mide) is carcinogenic, we follow the survival history of 161 white employees of 2 factories who were exposed to dibromoethane. Among them, we observe 7 can- cer deaths in the period 1940-1975. On the other hand, the mean number of cases over that period in that general population is expected to be 5.8. Do those 7 cases provide a reason to consider the substance as carcinogenic?
Answers
When investigating whether or not the substance dibromoethane (ethylene dibromide) is carcinogenic, we follow the survival history of 161 white employees of 2 factories who were exposed to dibromoethane.
Among them, we observe 7 cancer deaths in the period 1940-1975. On the other hand, the mean number of cases over that period in that general population is expected to be 5.8. Do those 7 cases provide a reason to consider the substance as .Yes, the seven cases provide a reason to consider the substance dibromoethane as carcinogenic.
Since the number of cancer deaths observed in the 161 white employees exposed to dibromoethane is 7 which is greater than the expected cancer deaths in the general population, which is 5.8. Therefore, the excess cases may suggest that dibromoethane has some carcinogenic potential.
Hence, we can consider dibromoethane as carcinogenic.
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A mystery element is solid at room temperature. When dropped, it broke very easily. When put into a circuit, it did not conduct electricity. When held over a flame, it did not become warm. What type of an element (metal, nonmetal, or metalloid) is it likely to be? Explain your reasoning. Include the properties of that type of element in your explanation
Answers
A mystery element is non-metal because non-metal can't conduct electricity.
Why a mystery element is non-metal?We know that metalloids have some physical properties of metals and some of non-metals. They have the ability to conduct heat and electricity and they are shiny like metals but brittle like nonmetals so we can conclude that a mystery element is non-metal because non-metal can't conduct electricity.
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_________is a chemical or physical agent capable of inducing changes in DNA called mutations
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A mutagen is a chemical or physical agent capable of inducing changes in DNA, leading to mutations.
Mutagens can alter the genetic material by causing changes in the DNA sequence, such as substitutions, deletions, insertions, or rearrangements. These changes can result in the formation of new alleles or the disruption of normal gene function.
Examples of mutagens include certain chemicals, such as certain pesticides, tobacco smoke, and certain chemotherapy drugs. Physical agents like ionizing radiation (e.g., X-rays, gamma rays) and ultraviolet (UV) radiation from the sun or tanning beds can also induce DNA mutations.
It is important to note that not all mutagens are harmful. Some mutations can be beneficial, leading to genetic variation and adaptation in populations, while others may have detrimental effects, such as contributing to the development of diseases like cancer.
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What is the ph of H2SO4?
Answers
Answer:
H2SO4 sulfuric acid 2.75
Explanation:
I hope it will help you
PLEASE HELP RN ITS URGENT
Answers
Answer: transporting oxygen-rich blood to the body
Explanation:
how many molecules are in 6.9 moles of CO2?
Answers
a claim about arrangements of electrons and properties within a family elements
Answers
A claim about the arrangements of electrons and properties within a family of elements is described below:
elements in the same family have the same number of outermost shell electronselements in the same family have similar chemical properties due to them having the same arrangements of electronsWhat are families of elements?Families of elements refer to elements that are found in the same group in the periodic table.
Elements that belong to the same family have the same arrangement of electrons.
The families of elements are found in the vertical columns knowns as groups. They have the same physical properties because they have the same number of e; electrons in their outermost shell.
For example, elements belonging to group 1 have one valence electron and show similarity in their chemical properties.
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Benzene and toluene form nearly ideal solutions. The boiling point of pure benzene is 80.1°C. Calculate the chemical potential of benzene relative to that of pure benzene when Xbenzene=0.238 at its boiling point.
El benceno y tolueno forman soluciones casi ideales. EI punto de ebullición del benceno puro es 80.1 ∘
C. Calcule el potencial químico del benceno relativo al del benceno puro cuando x benceno
=0.238 en su punto de ebullición.
Answers
Without specific numerical values, it is not possible to provide an exact numerical answer for the chemical potential of benzene relative to pure benzene at its boiling point.
To calculate the chemical potential of benzene relative to that of pure benzene, we can use Raoult's law, which applies to nearly ideal solutions.
Raoult's law states that the vapor pressure of a component in an ideal solution is directly proportional to its mole fraction in the solution. In this case, we assume that benzene and toluene form a nearly ideal solution.
At the boiling point of benzene, the mole fraction of benzene (Xbenzene) is given as 0.238.
The vapor pressure of pure benzene at its boiling point is equal to the atmospheric pressure, which we'll denote as P°benzene.
According to Raoult's law, the vapor pressure of benzene in the solution (Pbenzene) is equal to Xbenzene times the vapor pressure of pure benzene: Pbenzene = Xbenzene * P°benzene.
The chemical potential of benzene relative to that of pure benzene can be calculated using the equation: μbenzene = μ°benzene + RT * ln(Pbenzene/P°benzene), where μ°benzene is the chemical potential of pure benzene.
At the boiling point, the chemical potential of pure benzene is equal to its molar Gibbs energy of vaporization: μ°benzene = ΔG°vap / n, where ΔG°vap is the standard molar Gibbs energy of vaporization and n is the number of moles of benzene.
By substituting the given values and calculating the necessary components, we can determine the chemical potential of benzene relative to that of pure benzene at the boiling point.
Note: Specific numerical values were not provided in the question, so it is not possible to provide an exact numerical answer without additional information.
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students conducting research observe the rate of an enzyme-catalyzed reaction under various conditions with a fixed amount of enzyme in each sample. when will increasing the substrate concentration likely result in the greatest increase in the reaction rate?
Answers
Increasing the substrate concentration will likely result in the greatest increase in the reaction rate when the substrate concentration is lower than the concentration of the enzyme.
The concentration of the substrate affects the rate of reaction since there is a direct correlation between the number of enzyme-substrate complexes that are formed and the rate of reaction.
When there is more substrate, more enzyme-substrate complexes can form, resulting in an increase in the rate of reaction.
So, it is highly likely that when the substrate concentration is low, increasing the substrate concentration will result in the greatest increase in the reaction rate.
However, when the substrate concentration is already high, the reaction rate may not continue to increase as a result of increasing the substrate concentration.
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g which statement about a hydrogen bonding is not correct? group of answer choices in a hydrogen bonding, the h atom on one molecule is attracted to unpaired electrons associated with n, o, or f on another molecule.
Answers
The correct answer is that in a hydrogen bonding, the H atom on one molecule is attracted to unpaired electrons associated with N, O, or F on another molecule.
The statement that is not correct about hydrogen bonding is that it involves the sharing of electrons among atoms. The correct answer is that in a hydrogen bonding, the H atom on one molecule is attracted to unpaired electrons associated with N, O, or F on another molecule.Hydrogen bonding is a type of bonding that occurs when hydrogen is bonded to a more electromotive atom like nitrogen, oxygen, or fluorine.
When hydrogen bonds with these elements, a partial positive charge is created on the hydrogen atom, while a partial negative charge is created on the nitrogen, oxygen, or fluorine atom. This creates an electrostatic attraction that is known as a hydrogen bond
.Hydrogen bonding plays a vital role in the structure and properties of many biological molecules, including DNA, proteins, and cellulose. It is also responsible for the unique properties of water, such as its high boiling point and surface tension.
Furthermore, it is responsible for the cohesion of water molecules and the fact that ice floats in water. This is because the hydrogen bonds in ice form a crystalline structure that is less dense than liquid water.
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One of the basic building blocks of matter, which cannot be broken down by chemical means is a(n)______ , of which there are 92 that occur naturally.
Answers
One of the basic building blocks of matter, which cannot be broken down by chemical means is an element.
The first chemical element is hydrogen (atomic number is 1) and the last is oganesson (atomic number is 118).
Elements are scheduled in Periodic table, ordered by their atomic number.
Other example, krypton is a chemical element with symbol Kr and atomic number 36.
Krypton has 36 electron and 36. It is noble gas (group 18).
Noble gases are in group 18: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe) and radon (Rn). They have very low chemical reactivity.
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What is a redox reaction? Give an example.
Answers
A redox reaction is a chemical reaction that involves the transfer of electrons between two species. One species loses electrons (undergoes oxidation) while the other species gains electrons (undergoes reduction), hence the name "redox".
Redox reactions are fundamental to a wide range of chemical and biological processes, such as metabolism, energy production, and corrosion. An example of a redox reaction is the reaction between hydrogen gas (H2) and chlorine gas (Cl2) to form hydrogen chloride (HCl). In this reaction, hydrogen is oxidized to form H+ ions, while chlorine is reduced to form Cl- ions, and the overall reaction can be written as: H2 + Cl2 → 2HCl.
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what is the mass of 2.00 moles of ca(oh)2? group of answer choices 122.5 g 222.4 g 148.2 g 74.1 g 56 g
Answers
The mass of 2.00 moles of Ca(OH)₂ is 148.2 g.
What is a mole?A mole is a unit of measurement used in chemistry to represent particles, such as atoms, molecules, or ions. A mole is defined as the amount of a substance that contains the same number of entities (such as atoms, molecules, or ions) as there are in 12 grams of pure carbon-12.
Moles and mass are directly proportional to each other since they both represent the quantity of substance.
Moles = Mass/Molar mass
Mass = Moles x Molar mass
The molar mass of Ca(OH)₂ is calculated as follows:
Molar mass of Ca = 40.1 g/mol
Molar mass of O = 16.0 g/mol
Molar mass of H = 1.0 g/mol2 atoms of oxygen, 2 atoms of hydrogen, and 1 atom of calcium are present in Ca(OH)₂.
Therefore, the molar mass of Ca(OH)₂ = 40.1 g/mol + 2(16.0 g/mol) + 2(1.0 g/mol) = 74.1 g/mol
The mass of 2.00 moles of Ca(OH)₂ = Moles × Molar mass= 2.00 × 74.1= 148.2 g
Hence, 148.2 g is the mass of 2.00 moles of Ca(OH)₂.
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A 125 cm3 soap bubble is formed outside, where the temperature is 10.0°C. It drifts through an open door, expands and pops in a house. If the maximum volume of the bubble could be 140 cm3, what is the temperature inside the house? (In C°)
Answers
In this question, we have a situation where a gas is in constant pressure but changing its volume and temperature, and the best way to solve a situation like this, is through the Charles's gas law formula, which shows the relationship between volume and temperature when the pressure is constant. The formula is:
V1/T1 = V2/T2
We have:
V1 = 125 cm3, or 0.125 Liters
T1 = 10.0°C, or 283 K
V2 = 140 cm3, or 0.140 Liters
T2 = ?
Now we add these values into the formula:
0.125/283 = 0.140/T2
0.000442 = 0.140/T2
T2 = 0.140/0.000442
T2 = 317 K, or 44°C
what is the Lewis dot structure for NOH3
Answers
In this structure, Nitrogen (N) has a lone pair of electrons, Oxygen (O) has a lone pair of electrons, and each Hydrogen (H) atom has two electrons and no lone pairs.
The Lewis dot structure for \(NOH_{3}\) (nitrosamine) can be determined by following a few steps:
Count the total number of valence electrons in the molecule. Nitrogen (N) contributes 5 valence electrons, Oxygen (O) contributes 6 valence electrons, and Hydrogen (H) contributes 1 valence electron each. So, the total number of valence electrons is:
5 (N) + 6 (O) + 3 (H) = 14 valence electrons.
Identify the central atom. In this case, Nitrogen (N) is the central atom since it can form more bonds compared to Oxygen (O).
Connect the atoms using single bonds. In \(NOH_{3}\), Nitrogen (N) is bonded to Oxygen (O) and three Hydrogen (H) atoms.
Place the remaining electrons around the atoms to complete their octets. Start by filling the octet of the atoms bonded to the central atom, and then distribute the remaining electrons to satisfy the octet rule. If there are extra electrons, place them on the central atom.
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9. Apply: Atoms are most stable when their outermost shell is full. If their outermost shell is not
full, atoms tend to gain, lose, or share electrons until the shell fills up. While doing this,
atoms react and form chemical bonds with other atoms.
Based on this, what can you infer about the reactivity of helium and neon?
Answers
Answer:
helium and neon are both noble gases their outermost shells are full or stable the elements will agree with the statement s above
explain how these concepts are related: species, population, and community
Answers
Answer:
Organisms that belong to the same species, form groups, and interact together in the same environment make the level of the population whereas a community has groups of different species living together in an environment. Species are the group of individuals that are genetically related to each other.
we dissolve 2.45 g of sugar in 200.0 g water. what is the mass percent of sugar in the solution? we dissolve 2.45 g of sugar in 200.0 g water. what is the mass percent of sugar in the solution? 1.21% 123% 1.23% 2.42% none of the above
Answers
When 2.45 grams of sugar are dissolved in 200.0 grams of water, the mass percentage of sugar in the solution is 1.21%.
Mass Percent-
The concentration of chemical substances in solutions can be stated in a variety of ways. While the molar concentration refers to the quantity of moles of the solute in the solution, the mass concentration refers to the mass of the solute per unit volume of the solution. The mass percent of the solute in the solution is expressed as a percentage. While molar and mass concentrations have units of measurement, mass percent has none.
The total mass is 202.45 gms when 2.45 grams of sugar are dissolved in 200.0 grams of water. According to the definition and idea of the mass percent, such a solution would have a sugar content of (2.45 /202.45) 100 = 1.21% sugar.
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how can you tell the charge of an ion?
Answers
Answer:
the charge of an element is equal to the number of orotons minus the number of electrons. the number if proton is equal to the number of elements given in the periodic table. the number of electrons is equal to the atomic numver minus the CHARGE of the atom
A balloon has a volume of 9.2 liters at 28.9 C. The balloon is then heated to a temperature of 183.0 C. The volume of the balloon after heating will be __ 1liters.
Answers
The volume of the balloon after heating will be approximately 13.9 liters.
What is Temperature?
Temperature is a measure of the average kinetic energy of the particles in a substance, such as a gas, liquid, or solid. It is a scalar quantity that determines the direction of heat flow between two substances when they are in contact, with heat flowing from a substance with higher temperature to a substance with lower temperature until they reach thermal equilibrium.
The volume of a gas is directly proportional to its temperature (assuming constant pressure), according to the ideal gas law. The ideal gas law is given by the equation:
PV = nRT
where P is pressure, V is volume, n is the number of moles of gas, R is the ideal gas constant, and T is the temperature in Kelvin.
To solve this problem, we can convert the temperatures from Celsius to Kelvin by adding 273.15 to each temperature.
Initial volume of balloon (V1) = 9.2 liters
Initial temperature of balloon (T1) = 28.9°C + 273.15 = 302.05 K
Final temperature of balloon (T2) = 183.0°C + 273.15 = 456.15 K
We can set up a proportion using the initial and final temperatures:
(V1 / T1) = (V2 / T2)
Plugging in the known values:
(9.2 / 302.05) = (V2 / 456.15)
Now we can solve for V2, the final volume of the balloon after heating:
V2 = (9.2 / 302.05) * 456.15
V2 = 13.9 liters (rounded to one decimal place)
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Photosynthesis uses all of the following except
to make food.
carbon dioxide
O light energy
O chemical energy
water
is it’s A?
Answers
you add iodine to cornstarch solution and produce a new,blue substance
is it a physical change or a chemical change?
Answers
The addition iodine to cornstarch solution and produce a new, blue substance is a chemical change.
What are chemical changes?Chemical changes can be defined as a change of material when two different substance combine to form a new substance with different properties and one or more than one new substance can be formed.
There are basically five type of chemical reactions.
Combination reactionDecomposition reactionDisplacement reactionDouble displacement reactionPrecipitation reactionThus, the addition iodine to cornstarch solution and produce a new, blue substance is a chemical change.
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Give the formula for the compound formed between the following ions:
Aluminum and hydroxide
2 pc
Answers
Answer:
Al(OH)3
Explanation:
-Aluminum hydroxide is an antacid. Aluminum hydroxide is used to treat heartburn, upset stomach, sour stomach, or acid indigestion. Aluminum hydroxide is also used to reduce phosphate levels in people with certain kidney conditions. Aluminum hydroxide may also be used for purposes not listed in this medication guide.
-Aluminium hydroxide is an inorganic basic compound used as an intermediary in organic synthesis and as an additive in pharmaceutical and fine chemical industries. Formula and structure: The aluminum hydroxide chemical formula is Al(OH)3 and its molar mass is 78.00 g mol-1.
A gas occupies 3. 5 l at 760 mmhg pressure. Find the volume of the gas when the pressure is 1140 mm hg.
Answers
When a gas is subjected to different pressure conditions and the volume changes, we use Boyle's Law, which states that the pressure of a gas is inversely proportional to its volume, provided the temperature remains constant. The volume of gas when the pressure is 1140 mmHg is 2.05 L, approximately.
Given the initial volume of gas as 3.5 L and the initial pressure as 760 mmHg, we are to find the volume of gas when the pressure is 1140 mmHg. To solve the problem, we can use Boyle's Law, which states that the pressure of a gas is inversely proportional to its volume, provided the temperature remains constant. The mathematical representation of Boyle's Law is P1V1 = P2V2, where P1 and V1 are the initial pressure and volume, respectively, and P2 and V2 are the final pressure and volume, respectively. The equation can be rearranged as V2 = (P1V1)/P2 to solve for the final volume of gas, V2.Substituting the given values in the formula, we have V2 = (760 mmHg x 3.5 L)/1140 mmHgV2 = 2344/1140V2 = 2.05 L Therefore, the volume of gas when the pressure is 1140 mmHg is 2.05 L, approximately.
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Drag each characteristic to the correct category. Viruses do not possess all the characteristics of life. Identify those characteristics that viruses display and those they don't display.
Answers
Answer:
Virus is living due to reproduction and non-living due to crystal appearance.
Explanation:
Characteristics that viruses display is the ability of reproduction in which they increase in population which is a living character and have DNA or RNA which help them to make exact copies of itself. Virus is parasitic in nature because it causes harm to the living host such as humans, animals and plants. Some characteristics that viruses don't display are that they are not like living cells, have no membrane around them, no organelles such as mitochondria, golgi bodies, endoplasmic reticulum and lysosomes etc. Viruses are present in crystal form outside the cell.
Which list only includes terms that describe oxygen, gas, and O2?
A. Compound, molecule, pure substance
B. Element, molecule, pure substance
C. Atom, compound, molecule
D. Atom, element, molecule
Answers
Oxygen is an element, gas is a molecule and O2 is a pure substance.
Hope this helps
Oxygen gas O2 is a compound, a molecule and a pure substance.
Oxygen gas is a compound because it contains more than one atom( two oxygen atoms) that are chemically combined together.
Oxygen gas is a molecule because it can exist independently as a unit and the oxygen atoms are covalently bound.
It is a pure substance because it contains only oxygen molecules.
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Ethyl chloride (C2H5Cl) boils at 12∘C. When liquid C2H5Cl under pressure is sprayed on a room-temperature (25∘C) surface in air, the surface is cooled considerably. Assume that the heat lost by the surface is gained by ethyl chloride. What enthalpies must you consider if you were to calculate the final temperature of the surface?
Check all that apply.
a) The specific heat of C2H5Cl(g)
b) The specific heat of the solid surface
c) The specific heat of C2H5Cl(l)
d) The enthalpy of vaporization of C2H5Cl(l)
Answers
The specific heat of C₂H₅Cl(g), The specific heat of C₂H₅Cl(l), and The enthalpy of vaporization of C₂H₅Cl(l).
What is temperature?Temperature is the measure of the average kinetic energy of the particles in a substance. It is a measure of the amount of heat present in a given system. Temperature can be measured in various units such as Fahrenheit, Celsius, and Kelvin. Temperature is an important indicator of the energy transfer of a system and can be used to predict changes in the system.
a) The specific heat of C₂H₅Cl(g) - Yes, because heat is transferred from the surface to the C₂H₅Cl(g) and it is necessary to know the amount of heat that is required to increase the temperature of the gas.
c) The specific heat of C₂H₅Cl(l) - Yes, because heat is transferred from the surface to the C₂H₅Cl(l) and it is necessary to know the amount of heat that is required to increase the temperature of the liquid.
d) The enthalpy of vaporization of C₂H₅Cl(l) - Yes, because the C₂H₅Cl(l) is vaporized when it is sprayed onto the surface, and it is necessary to know the amount of energy that is required for the liquid to be vaporized.
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