Answer:
2.23L
Explanation:
Using the general gas law as follows:
PV = nRT
Where;
P = pressure (atm)
V = volume (L)
n = number of moles (mol)
R = gas constant (0.0821 Latm/molK)
T = temperature (K)
According to the information provided in this question,
Mass of nitrogen = 2800mg
Since 1g = 1000mg
2800mg = 2800/1000
= 2.8g
Using mole = mass ÷ molar mass
Molar mass of nitrogen gas (N2) = 28g/mol
mole = 2.8/28
mole of N2 gas = 0.1mol
Pressure = 98kPa
1 kilopascal (kPa) = 1000pascal (pa)
98kPa = 98 × 1000
= 98000pascal
Since 1 Pascal = 9.869 × 10^-6 atmosphere (atm)
98000pascal = 98000 × 9.869 × 10^-6
= 0.967atm
Temperature = -10°C
Kelvin = °C + 273
Kelvin = -10 + 273
K = 263K
Hence, using PV = nRT
0.967 × V = 0.1 × 0.0821 × 263
0.967V = 2.159
V = 2.159/0.967
V = 2.23
Volume of Nitrogen gas = 2.23 L
3. Some of the reagents used in this lab are easily confused: such as persulfate (S208?)
and thiosulfate (S20:2). A student inadvertently switched these reagents, adding the
persulfate to beaker A and thiosulfate to beaker B. How would this affect the results?
What would the student observe with respect to the mixture in beaker A?
Answer:
Different compounds are formed.
Explanation:
Due to this switching of chemicals, the result of both beakers will be different because the chemicals react with the different solution in the beaker. The composition of both chemicals are different from one another which produces different compounds or products when they are mixed with the solution so we can say that this switching of chemicals will definitely affect the results of the experiment. The student will observe the formation of different compounds and different colour of the solution.
How is hydrogen in heavy water different from hydrogen in normal water?
0 A. The hydrogen atoms in heavy water have a neutron in the nucleus
doubling the mass.
B. The heavy water molecules contain 3 hydrogen atoms instead of
0 C. The hydrogen in heavy water is radioactive.
OD. The hydrogen atoms in heavy water have an extra proton in the
nucleus.
ling
The hydrogen in heavy water different from hydrogen in normal water as the hydrogen atoms in heavy water have a neutron in the nucleus doubling the mass. Therefore, option A is correct.
Why is heavy water different?The nucleus of each of its two hydrogen atoms contains not only a proton but also a neutron, so-called "heavy water" (D₂O) weighs more. Known as deuterium.
The heavy hydrogen causes subtle differences in heavy water from small increases in boiling and freezing points to a roughly 10% increase in density.
Deuterium differs from the hydrogen found in water known as protium in that each atom of deuterium contains a proton and a neutron, whereas most hydrogen contains only a proton.
Thus, option A is correct.
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a certain acetic acid solution has . calculate the volume of 0.0838 m required to reach the equivalence point in the titration of 20.0 ml of the acetic acid solution.
a certain acetic acid solution has 63.2 mL is the volume of 0.0838 m required to reach the equivalence point in the titration of 20.0 ml of the acetic acid solution.
Then, using the concentration and the volume of acid, you can determine the moles of acid that get neutralized by the KOH. Then we do a stoichiometric calculation for the volume of KOH required.1.77 x 10^-5 = [(0.0020893) (0.0020893)] / x. x = 0.24662 M. The reaction between CH3COOH and KOH is a 1:1 molar ratio, so we can use M1V1 = M2V2:
(0.24662 mol/L) (25.0 mL) = (0.0975 mol/L) (y), y = 63.236 mL to three sig figs, we have 63.2 mL. The space occupied by gases particles at standard pressure and temperature conditions is defined as the volume of gas. It is represented by the letter 'V'. The SI unit of quantity is litres, abbreviated as 'L'. At room temperature, a mole of fuel has a volume of 24 m3 or 24000 cm3. The point in titration where the volume of titrant added might be enough to completely neutralise the analyte solution is known as the standard solution. In an acid-base titrant, moles of base equal moles of acid, and the solution contains only salt and water.
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If a molecule has bond angles of 120° between the atoms, what type of hybrid orbitals are on the central atom in the molecule?
Answer:
Solution
verified
Verified by Toppr
Correct option is B)
In sp
3
d type of hybridisation, shape of molecule is trigonal bipyramidal and bond angle will be of 120
o
what mass of kcl in grams must be added to 500 ml of a 0.15 m kcl solution to produce a 0.40 m solution
The mass of 9.3125 g of potassium chloride must be added to 500ml of a 0.15 m solution.
The term Molarity is the number of moles of solute per liter of solution. It is also called as molar concentration. The number of moles of a substance equals the ratio of its given mass in a chemical reaction to the mass of one mole of that substance. A mole can be defined as the amount of substance. It can be expressed as grams, liters, atoms, molecules or particles. The number of moles of a substance equals the ratio of its given mass in a chemical reaction to the mass of one mole of that substance. It is expressed as,
Number of moles = Molarity * volume in liter
no of moles of KCL = molarity * volume in L
= 0.15 * 0.5
= 0.075 moles
no of moles of KCL = molarity * volume in L
= 0.4 * 0.5 = 0.2 moles
no of moles of KCL is added = 0.2 - 0.075
= 0.125 moles
mass of KCL = no of moles * gram molar mass
= 0.125*74.5 = 9.3125 g of KCL
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0. 008 moles of C3H7OH contains how many atoms of carbon?
To determine the number of carbon atoms in 0.008 moles of C3H7OH, we first need to find the molar mass of the compound.
The molar mass of C3H7OH can be calculated by adding the atomic masses of all the atoms in the molecule:
3(12.011) + 8(1.008) + 1(15.999) = 60.096 g/mol
This means that 1 mole of C3H7OH has a mass of 60.096 g.
To calculate the number of moles of carbon atoms in 0.008 moles of C3H7OH, we need to multiply the number of moles of C3H7OH by the number of carbon atoms in one mole of C3H7OH.
One mole of C3H7OH contains 3 carbon atoms, so 0.008 moles of C3H7OH contains:
0.008 moles x 3 = 0.024 moles of carbon atoms
Finally, we can convert moles of carbon atoms to the number of carbon atoms using Avogadro's number, which is 6.022 x 10^23 atoms per mole:
0.024 moles x 6.022 x 10^23 atoms/mole = 1.445 x 10^22 atoms of carbon
Therefore, 0.008 moles of C3H7OH contains 1.445 x 10^22 atoms of carbon.
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what does Le châteliers principle state?
4. You have learned about the common characteristics of inner planets and outer planets. Explain
how these characteristics are verified observations and not just
the opinions of scientists. I’ll give you BRAINLIST PLEASE HELP I HAVE TO RIGHT IT DOWN!!
Answer:
We all know that the characteristics are proven, not just an opinion, because they meet the correct standards. The four inner planets are formed of rock and metal and have shorter orbits, slower rotation, and no rings. The four outer planets have longer orbits and spins, as well as a composition of gases and liquids, as well as a large number of moons and rings. The outer planets are known as gas giants because they are comprised of hydrogen and helium.
Answer: For fun FLVS
Explanation:
Which of the following shows the halogens in order of increasing activity?
A) fluorine, bromine, chlorine, iodine
B) bromine, chlorine, iodine, fluorine
C) iodine, bromine, chlorine, fluorine
D) fluorine, chlorine, bromine, iodine
Answer: The tendency of the halogen elements to form salt like (i.e., highly ionic) compounds increases in the following order: astatine < iodine < bromine < chlorine < fluorine. ... The oxidizing strength of the halogens increases in the same order—i.e., from astatine to fluorine.
Explanation:
which best describes minerals? the same pattern throughout (homogeneous) varies throughout (heterogeneous)
Minerals are naturally occurring inorganic substances that have a specific chemical composition and a crystalline structure. Minerals can be either homogeneous or heterogeneous, depending on their composition and crystal structure.
Minerals are naturally occurring inorganic solids that have a specific chemical composition and a crystalline structure. Some minerals, such as quartz, are homogeneous, meaning that their atoms are arranged in a repeating pattern throughout the crystal, resulting in a uniform composition and structure.
Other minerals, such as granite, are heterogeneous, meaning that they have a varied composition and structure due to the presence of different minerals within the same rock.
The classification of a mineral as homogeneous or heterogeneous depends on the internal arrangement of its atoms and the presence or absence of impurities or other minerals within the crystal structure.
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is photosynthesis part of chemical change?If yes can I have photosynthesis in chemical equation as chemical symbols
Answer:
yes it is a chemical change
i have made it in above picture
Help!!
Predict the missing component in the nuclear equation.
Answer:
the missing component is the option (a) electron
Explanation:
this is a nuclear decay of Th which resulted in the emission of alpha particles, equivalent to high speed electrons.
What is the difference between an element and a compound? Give an example of each.
please answer in a sentence.
Answer:
An element is a single atom by itself found on the periodic table. A compound is made when two or more elements chemically bond together. An example of an element is hydrogen. (H) An example of a compound is \(H_{2} O\).
Explanation:
explained above
A 150 ml sample of a gas is heated from 35 °C to 85°C at constant pressure. What is the final volume? Please list known and unknown quantities, units, formula used in the problem and show substituted values in the problem
Answer:
thats hard ummm
Explanation:
yeah sorry i can't answer that
but heres an example: just go to this site it should help
Charles' Law Calculator
hope this works
Marking BRAINLIEST!! - Chlorine reacts with methane to form gaseous hydrogen chloride and chloromethane according to the following equation: Cl2 (g) + CH4 (g) → HCl (g) + CH3Cl (g) If 100 mL of chlorine reacted with excess methane at constant pressure and temperature, what volume of chloromethane would be formed?
Answer:
the answer for the question is 40 mL
Who is Gregor Mendeſ, and what did he
discover about traits?
Answer:
Gregor Mendel, through his work on pea plants, discovered the fundamental laws of inheritance. He deduced that genes come in pairs and are inherited as distinct units, one from each parent. Mendel tracked the segregation of parental genes and their appearance in the offspring as dominant or recessive traits.
Through his careful breeding of garden peas, Gregor Mendel discovered the basic principles of heredity and laid the mathematical foundation of the science of genetics.
Explanation:
1. Two hypothetical elements in the periodic table have different characteristics as shown in the following table.
ELEMENT, ELECTRONEGATIVITY, TYPE OF ION, ELECTRICAL CONDUCTIVITY, BRIGHTNESS
X Low Electro cation ion high conduc brightness yes
Y High Electro anion ion none conduc brightness no
According to the data in the table, answer the following questions.
a. If you were to carry out an experiment with these 2 hypothetical elements, write a hypothesis to differentiate them and write another hypothesis about how they would react with oxygen and water.
HYPOTHESIS 1:
HYPOTHESIS 2:
In four steps, design an experiment (write step 1, step 2, step 3 and step 4) to check and verify what types of links would form these elements X and Y if after a series of reactions these elements join in some type chemical bonding.
STEP 1
STEP 2
STEP 3
STEP 4
b. A series of reactions of elements X and Y are given below, complete these reactions bearing in mind that X has an oxidation number +2 and Y has an oxidation number +6.
I. X + O2 XO
II. Y + O2 YO3.
III. XO + H2O X(OH)2
IV. YO3 + H20 H2YO4.
V. X(OH)2 + H2YO4 A + H2O.
d. Considering the result (A) in reaction number 5, answer:
I. What type of chemical bond do you think A has?
II. What are its physical and chemical properties?
III. Design a four-step experiment so that you can identify the type of chemical bond that substance A obtained in reaction 5 has. The design must contain at least 2 variables to be measured and 2 hypotheses with these variables.
Answer:
gas and element and compound
Explanation:
because it's different and more power so the elements
i need help with this chemistry worksheet
1) Allowed
2) Not allowed
3) Not allowed
4) Not allowed
5) Not allowed
6) Not allowed
7) Allowed
8) Allowed
9) Allowed
10) Not allowed
How do we fill atomic orbitals?Atomic orbitals are filled with electrons according to the Aufbau principle and Hund's rule, following the electron configuration of the elements in the periodic table.
The Aufbau principle states that electrons fill orbitals in increasing energy levels starting from the lowest energy level. Hund's rule states that electrons occupy orbitals of equal energy singly before pairing up with another electron of opposite spin. The electron configuration is determined by the number of protons in the nucleus, which is the atomic number of the element. The electron configuration determines the electron arrangement in the atom and its chemical properties.
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What is the mass of 11.2dm³ and the following gases at stp. a. Ammonia. b. Hydrogen Sulphide. c. Chloride. d. Dinitrogen (I) oxide. ( H=1, N=14, S=32, O=16, Cl=35.5, GMV=22.4dm³ at stp)
Answer:
Explanation:
weighs equal to 22 g. Find out its molecular mass . Molecular mass of gas = 44 amu
reaction type
__HCl + __Mg -> __MgCl2 + __H2
What is the name of this ion?
Can someone help
Activity 2: Who's My Family? A fire has occurred in a nearby maternity clinic. The assigned nurse quickly rushed out of the place to secure the newly born babies. Unfortunately, there were some babies without their identification bracelets. Using your knowledge about codominance inheritance will help bring these babies back to their correct parents.
Codominance is a type of inheritance pattern in which both alleles of a gene are expressed equally in the phenotype of the individual. This means that if a baby inherits two different alleles for a particular trait, both will be expressed in the baby's physical appearance.
In the case of the missing identification bracelets, the nurse could use the principle of codominance to help identify the babies and return them to their correct parents. For example, if one baby has a parent with blood type A and the other has a parent with blood type B, and both babies have blood type AB due to codominance, then the nurse could match the babies with their correct parents based on their blood type.
Similarly, if there are other observable traits that exhibit codominance, such as eye color or skin tone, the nurse could use these to help identify the babies and return them to their correct parents. By understanding and applying the principles of codominance inheritance, the nurse could help ensure that each baby is reunited with their rightful family.
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Select all the correct answers.
What do scientists use to communicate extremely small measurements?
scientific notation
unit prefixes
graduated cylinders
physical models
base units
Scientists use scientific notation to communicate extremely small measurements. Hence, option A is correct.
What scientific notation?Scientific notation is a way of writing very large or very small numbers.
Scientists use scientific notation to represent very small or very large numbers because this notation increases the
accuracy of measured quantities.convenience in using the numbers.the number of significant figures.precision of measurements.Hence, option A is correct.
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What is the ph of a buffer solution prepared with 0.055 m sodium acetate and 0.01m acetic acid. the pka value of acetic acid is 4.76 at 250c.
The ph of a buffer solution prepared with 0.055 m sodium acetate and 0.01m acetic acid at the pka value of acetic acid is 4.76 at 250c is 5.5.
What is a buffer solution?A weak acid and its conjugate base, or vice versa, are combined to form an aqueous solution known as a buffer solution (more specifically, pH buffer or hydrogen ion buffer). A little bit of a strong acid or base applied to it barely affects its pH.
Strong acids or bases applied in modest amounts don't cause buffer solutions to shift pH. An illustration of a buffer made up of a weak acid and its salt is a solution of acetic acid and sodium acetate CH3COOH + CH3COONa.
The three primary buffer systems in the human body are the phosphate, protein, and carbonic acid bicarbonate systems.
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Alcohols are a key intermediate in organic synthesis since they can oxidized to carbonyl containing functional groups. In this tutorial, we will cover: 1. what happens in an oxidation reaction 2. oxidation of secondary alcohols to ketones 3. oxidation of primary alcohols to aldehydes or carboxylic acids 4. oxidation reagents and how we can control oxidation The previous example showed the simplest alcohol and the oxidation products expected. Note that the oxidation of an alcohol to a higher oxidation state involves loss of hydrogens. This means that tertiary alcohols cannot be oxidized, since it does not have a hydrogen that can be lost. Longer primary and secondary alcohols can also be oxidized. Which of the reactions shown Constitute an oxidation reaction? CH, CHO CH,CH,OH CH,CO,CH CH,CH, OH CH, COH CH CHO - CH.CH OH > OH
The reactions that constitute oxidation reaction are, CH3CH2OH --> CH3CHO, CH3CHO --> CH3COOH, CH3CH2CH2OH --> CH3COCH3.
An oxidation reaction is a chemical reaction in which an atom or molecule loses one or more electrons. In the case of alcohols, oxidation typically involves the loss of hydrogen atoms and the addition of oxygen atoms to form a carbonyl-containing functional group.
The reactions that constitute an oxidation reaction are the ones that involve the loss of hydrogen atoms and the addition of oxygen atoms. In the examples given, the following reactions are oxidation reactions:
1) CH3CH2OH --> CH3CHO (oxidation of a primary alcohol to an aldehyde)
2) CH3CHO --> CH3COOH (oxidation of an aldehyde to a carboxylic acid)
3) CH3CH2CH2OH --> CH3COCH3 (oxidation of a secondary alcohol to a ketone)
The other reactions shown do not involve the loss of hydrogen atoms or the addition of oxygen atoms, and therefore do not constitute oxidation reactions.
Oxidation reagents are chemical compounds that are used to carry out oxidation reactions. Some common oxidation reagents include chromic acid (H2CrO4), potassium permanganate (KMnO4), and sodium hypochlorite (NaClO).
The choice of oxidation reagent and the reaction conditions can be used to control the level of oxidation and the products formed.
For example, using a milder oxidation reagent or lower reaction temperatures can help prevent over-oxidation of the alcohol to a carboxylic acid.
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Sulfur Dioxide (SO^2) emissions from smokestacks are reduced by a scrubbing mechanism in which SO^2 gas reacts with crushed limestone (CaCO) to produce removable solid waste. The quation for the balanced reaction can be found below. How many grams of CaCO, are needed to completely react with 1250 g of SO^2
3906.114 grams of CaCO₃ is required to completely react with 1250 grams of SO₂.
What is Scrubbing mechanism?Scrubbing mechanism is a method of removing pollutants, such as sulfur dioxide (SO₂), from industrial exhaust gases. In this mechanism, a substance, such as limestone or lime, is added to the exhaust gases, which react with the pollutants to form solid waste products that can be easily removed.
Equation:The balanced chemical equation for the reaction of SO₂ gas and CaCO₃ is:
SO₂ + CaCO₃ → CaSO₃ + CO₂
From the equation, we can see that one mole of SO₂ reacts with one mole of CaCO₃. Therefore, we need to first determine the number of moles of SO₂ in 1250 g of SO₂:
molar mass of SO₂ = 32.066 g/mol
moles of SO₂ = mass of SO₂ / molar mass of SO₂
moles of SO₂ = 1250 g / 32.066 g/mol
moles of SO₂ = 39.012 mol
Since one mole of SO₂ reacts with one mole of CaCO₃, we need 39.012 moles of CaCO₃ to react with the 39.012 moles of SO₂. The molar mass of CaCO₃ is 100.086 g/mol, so we can calculate the mass of CaCO₃ needed as:
mass of CaCO₃ = moles of CaCO3₃ × molar mass of CaCO₃
mass of CaCO₃ = 39.012 mol × 100.086 g/mol
mass of CaCO₃ = 3906.114 g
Therefore, we need 3906.114 grams of CaCO₃ to completely react with 1250 grams of SO₂.
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3.50 g of sodium bromide is dissolved in water to make a total volume of 125 ml of solution. what is the concentration of sodium bromide?
The concentration of sodium bromide in the solution is 22.4 g/L.
To calculate the concentration of sodium bromide in the solution, we need to divide the mass of sodium bromide by the volume of the solution. The mass of sodium bromide is given as 3.50 g, and the volume of the solution is 125 mL, or 0.125 L.
Therefore, the concentration of sodium bromide can be calculated as:
concentration = mass/volume = 3.50 g / 0.125 L = 28 g/L
However, this is the concentration in grams per liter (g/L). To express the concentration in terms of moles per liter (mol/L), we need to divide by the molar mass of sodium bromide. The molar mass of sodium bromide can be calculated as:
molar mass = atomic mass of Na + atomic mass of Br = 22.99 g/mol + 79.90 g/mol = 102.89 g/mol
Dividing the concentration in grams per liter by the molar mass gives the concentration in moles per liter:
concentration = 28 g/L / 102.89 g/mol = 0.272 mol/L
Therefore, the concentration of sodium bromide in the solution is 0.272 mol/L, or 22.4 g/L.
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Nitric oxide, NO, is made from the oxidation of NH3, and the reaction is represented by the equation:4NH3 + 5O2 → 4NO + 6H2OWhat mass of O2 would be required to react completely with 7.42 g of NH3?
• Molar mass NH3 ,= Molmass of N + ( 3xmol.mass of H ) = ,17 g/mol
,• Molar mass of O2, = 2 x Mol.mass of O = 2*16 = ,32 g/mol
,• Mass of NH3 = 7.42 g
The balanced equation of the chemical reaction:
\(4NH_3+5O_2\Rightarrow4NO+6H_2O\)According to stoichemistry ,
• 4 moles of NH3 reacts with 5 moles of O2
,• 4x17 g of NH3 reacts with 5x32 g of O2
• then , 7.42 g NH3 reacts with x mass of O2
Therefore mass of Oxygen will be :\(\begin{gathered} MassO_2\text{ = }\frac{7.42\cdot\text{ 5 }\cdot32}{4\cdot17} \\ \text{ = }17.45\text{ g } \end{gathered}\)This means that mass of Oxygen required = 17.45 gName the family to which each organic compound belongs. The first answer has been filled in for you.
Below you will find the answer
The question is incomplete.
The complete question is given below.
Name the family to which each organic compound belongs second third and fourth compound is ether, carboxylic acid, and ester respectively.
What is family mean in an organic compound?In an organic compound, family means the functional group an organic compound is having.
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Predict the major products formed when benzene reacts with the following reagents. (a). tert-butyl bromide, ALCI3 (b) bromine + a nail (c) iodine + HNO3 (d) carbon monoxide, HCI, and AICI3/CuCl (e) nitric acid + sulfuric acid.
The major products formed when benzene reacts with the following reagents are :
(a) tert-butylbenzene
(b) bromobenzene
(c) mixture (ortho-nitrobenzene, meta-nitrobenzene, para-nitrobenzene)
(d) benzaldehyde
(e) nitrobenzene
(a) The major product formed when benzene reacts with tert-butyl bromide and \(AlCl_3\) is tert-butylbenzene.
(b) The major product formed when benzene reacts with bromine and a nail (iron) is bromobenzene.
(c) The major product formed when benzene reacts with iodine and \(HNO_3\) is a mixture of ortho-nitrobenzene, meta-nitrobenzene, and para-nitrobenzene.
(d) The major product formed when benzene reacts with carbon monoxide, HCl, and \(AlCl_3\)/CuCl is benzaldehyde.
(e) The major product formed when benzene reacts with nitric acid and sulfuric acid is nitrobenzene.
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