To find the empirical formula of the compound, we need to determine the ratio of carbon, hydrogen, and oxygen atoms based on the given masses of CO2 and H2O produced during combustion.
First, we calculate the number of moles of CO2 and H2O produced using their respective molar masses. Then, we determine the moles of carbon and hydrogen in the compound by converting the masses of CO2 and H2O to moles.
Since CO2 contains one carbon atom and H2O contains two hydrogen atoms, we can determine the moles of carbon and hydrogen in the original compound. Lastly, we find the moles of oxygen by subtracting the moles of carbon and hydrogen from the total moles of the compound.
By dividing the moles of each element by the smallest number of moles obtained, we obtain the empirical formula of the compound.
To learn more about empirical formula click here: brainly.com/question/32125056
#SPJ11
A shorter, easier way to show chemical reactions, using symbols instead of 1 point
words is called a*
A. subscript
B.chemical equation
C.chemical formula
Answer:
Chemical equation
Explanation:
It consists of reactants and products.
in an array vasked omplantation of a dictionary you can store key vakue pairs
The statement "In an array-based implementation of a dictionary, you can store key-value pairs" is true.
We can store key-value pairs in an array-based implementation of a dictionary because this type of data structure allows for efficient storage and retrieval of information using keys as unique identifiers for the corresponding values. The array will have a fixed size, and each element in the array will contain a key-value pair.
The keys and values can be of any data type, and the array can be sorted or unsorted depending on the implementation. Accessing and modifying elements in the array will involve searching for the key and then updating the associated value. Overall, an array implementation of a dictionary can be an efficient way to store and retrieve data if the size of the dictionary is relatively small and the keys are easy to search for.
Learn more about array-based implementation: https://brainly.com/question/31750702
#SPJ11
Which of the following explanations correctly describes the materials!
Answer: Hello Love in order to answer this question I need to know what the explanation options are and what the materials are.
Explanation:
Give two physical properties of ionic compounds
Explanation:
Hope it helps you!!True or False? When solid mixed with other solid, it changed in color, size and shape?
Answer:
False
Explanation:
It becomes a heterogeneous mixture
Answer:
False.
Explanation:
Hope it helps!!!!!!!!!!
how many valence electrons does C6H14O6 have?
chhfjhfhou huohfpgvvocoj ognf
What do insects use to get oxygen? A. lungs B. spiracles C. gills D. stomata
Answer:
B spiracles
Explanation:
These are the tubes connected to the openings in their sides
Insects use tiny openings in their body wall called spiracles to get oxygen. They are also called tracheal tubes. Hence, option B is correct.
What is insect spiracles ?An insect's inside functions almost like a sponge. Because a sponge has tiny holes that allow water to enter, it becomes moist. Spiracles are similar to this. They allowed oxygen to enter the bug's body. They then release carbon dioxide.
Insects can open and close their spiracles . This is accomplished through certain muscles . To drive oxygen through their bodies, insects can also contract their muscles. The oxygen inside them is spread out by doing this.
Stomata is the reparatory organ in plants and gills are the organ in aquatic livings for respiration. In mammals lungs are the respiratory organ. Therefore, option B is correct.
Find more on spiracles:
https://brainly.com/question/4523662
#SPJ2
what are the features of a standard hydrogen electrode? a temperature of 298 k a carbon electrode hydrogen gas at 1.01 x 10^5 pa (1 atm) pressure
The features of a standard hydrogen electrode are :
1. Temperature of 298 K (25°C)
2. Carbon electrode
3. Hydrogen gas at 1.01 x 10^5 Pa (1 atm) pressure
4. Electrolyte solution containing a hydrogen ion activity of 1 mol/L
5. Platinum wire as the current collector
6. A Potential of 0.00 V (relative to the hydrogen gas)
These features are what make up the Standard Hydrogen Electrode (SHE). The temperature of 298 K is the temperature at which the SHE is calibrated and is the standard temperature used in most laboratory experiments. The carbon electrode serves as the interface between the hydrogen gas and the electrolyte, and the hydrogen gas is held at 1.01 x 10^5 Pa (1 atm) pressure. The electrolyte solution contains a hydrogen ion activity of 1 mol/L, which is necessary for the electrode to function properly. A platinum wire is used as the current collector, and the electrode has a potential of 0.00 V, relative to the hydrogen gas. All of these features are necessary for the SHE to function properly and for the electrode to serve as the reference for all other electrochemical measurements.
To know more about electrodes refer to the link brainly.com/question/17060277
#SPJ4
calcium carbonate is a common ingredient in antacids that reduces the discomfort associated with acidic stomach or heartburn. stomach acid is hydrocholoric acid, hcl. what volume in milliliters (ml) of an hcl solution with a ph of 1.51 can be neutralized by 14.0 mg of caco3? volume: ml if the stomach contains 13.0 ml of ph 1.51 solution, will all of the acid be neutralized? yes no what percentage of the acid is neutralized? if all of the acid is neutralized enter 100%. percentage neutralized:
The volume (ml) of HCl solution at pH 1.52 that can be neutralized with a given amount of CaCO₃ is 17.87 mL
We want to determine the volume of HCl that can be neutralized with a given amount of CaCO₃.
First we will write the chemical equation for the reaction i.e.
2HCl + CaCO₃ → CaCl2 + CO2 + H2O
This means that now 1 mole of CaCO₃, 2 moles of HCl are needed to neutralize.
Mass = 27.0 mg = 0.027 g Using the formula,
mol = mass / molar mass
∴ CaCO₃ mol present =
CaCO₃ mol present = 0.00026977 mol
Since 2 mol HCl is required, 2 mol HCl 70 mol CaCO₃ must be neutralized 20. of CaCO₃ 444 0.00053954 mol HCl
∴ CaCO₃ needs to be neutralized 0.00053954 mol HCl Now for the volume of HCl solution at pH 1.
52 required.
We will first determine the HCl concentration = 10^(-1.52)
[H⁺] = 0.
0302 M
∴ HCl concentration 0.0302 M
Now, for the volume using the formula,
Volume = mol/concentration
Required HCl Volume = 0.01787 L
Hence, the volume in milliliters (mL) of an HCl solution with a pH of 1.52 that can be neutralized by the given CaCO₃ is 17.87 mL.
To know more about neutralization, visit,
https://brainly.com/question/1934578
#SPJ4
what is a dehydrate in chemistry?
Answer:
hydrate agen
Answer:
In chemistry, a dehydration reaction is a conversion that involves the loss of water from the reacting molecule or ion.
Dehydration reactions are common processes, the reverse of a hydration reaction.
Common dehydrating agents used in organic synthesis include sulfuric acid and alumina.
Explanation:
good luck
What happens to the chemical structure of water when it changes states
Answer:
When water changes to a solid or gas, it's said that water changes to a different state of matter
Explanation:
Even when water physical form changes, the molecules stay the same. Water's molecules contains two hydrogen atoms that is bonded with one oxygen atom.
Calcium carbonate decomposes in this balanced equation:
CaCO3 CaO + CO2 ΔH = +110 kJ/mol
The decomposition of calcium carbonate is an endothermic reaction.
The given equation for the decomposition of calcium carbonate is:
CaCO₃ → CaO + CO₂
ΔH = +110 kJ/mol
where ΔH is the enthalpy change for the reaction.
The positive value of ΔH in the equation indicates that the reaction is endothermic, meaning that heat is absorbed by the reactants from the surroundings during the reaction. This means that the reaction requires an input of energy to proceed, and the products (CaO and CO₂) have higher potential energy than the reactant (CaCO₃).
To know more about calcium carbonate, here
brainly.com/question/13565765
#SPJ4
--The complete question is, Calcium carbonate decomposes in this balanced equation:
CaCO3 + CaO + CO2 ΔH = +110 kJ/mol
Is this reaction endothermic or exothermic?--
Which reaction occurs at the anode of a galvanic cell that has a zinc
electrode in an electrolyte with zinc ions and a copper electrode in an
electrolyte with copper ions? The reduction potential for the reduction of Cu2+
= 0.34 V. The reduction potential for the reduction of Zn2+ = -0.76 V.
A. Zn(s) → Zn2+(aq) + 2e
B. Cu(s) → Cu2+(aq) + 2e
C. Zn2+ (aq) + 2e → Zn(s)
D. Cu2+ (aq) + 2e →
Cu(s)
Answer: The reaction that occurs at anode is \(Zn(s)\rightarrow Zn^{2+}(aq.)+2e^-\)
Explanation:
Given : \(E^o_{Zn^{2+}/Zn}=-0.76V\)
\(E^o_{Cu^{2+}/Cu}=+0.34V\)
The substance having highest positive reduction potential will always get reduced and will undergo reduction reaction. Here, copper will undergo reduction reaction will get reduced.
The substance having highest negative reduction potential will always get oxidised and will undergo oxidation reaction. Here, zinc will undergo oxidation reaction will get oxidised.
Oxidation reaction occurs at anode and reduction reaction occurs at cathode.
Oxidation half reaction (anode) : \(Zn(s)\rightarrow Zn^{2+}(aq.)+2e^-\)
Reduction half reaction (cathode) : \(Cu^{2+}(aq.)+2e^-\rightarrow Cu(s)\)
difference between Ammonia and ammonium..
plz do not scam
In an electrochemical cell, equilibrium is the point at which:
A. None of these
B. both electrodes have an equal number of electrons.
C. ion concentrations are no longer changing and the voltage is 0.
D. Equilibrium cannot be reached in a voltaic cell because electrons only flow in one direction.
Answer:
C. ion concentrations are no longer changing and the voltage is 0.
Explanation:
Electrochemical cells are a device that generates current from redox reactions. In the cell, the equilibrium is reached when the voltage drops to 0. Thus, option C is correct.
What is an electrochemical cell?An electrochemical cell is a voltaic device that uses chemical energy to generate electrical energy and vice versa. It is of two types electrolytic and galvanic cells depending on the energy it produces.
The electrochemical cell comprises two electrodes namely an anode and cathode, a salt bridge or the porous barrier, and an external connection.
The connection shows the voltage that indicates the equilibrium. When the current flow stops and the voltage reaches zero, the electrochemical cell is said to be in equilibrium.
Therefore, no change in the ionic concentrations and zero voltage indicates equilibrium.
Learn more about electrochemical cells here:
https://brainly.com/question/16790905
#SPJ5
Gasohol is a mixture of gasoline and ethanol (grain alcohol), C2H5OH. Calculate the maximum work that could be obtained at 25 °C and 1 atm by burning 1. 003 mol of C2H5OH. C2H5OH(1) + 302(g) 2C02(g) + 3H20(g) Maximum work = kJ Use correct number of significant digits;
Gasohol is a blend of gasoline and ethanol. To determine the maximum work that can be obtained by burning 1.003 mol of C2H5OH at 25°C and 1 atm, the Gibbs free energy equation can be utilized. What is Gibbs free energy equation? Gibbs free energy equation is a thermodynamic equation that quantifies the maximum quantity of work that may be obtained during a chemical reaction. T
he equation is as follows: ΔG = ΔH - TΔSThe values of ΔH and ΔS are calculated from thermodynamic tables or by calculating the enthalpy and entropy of the products and reactants, and the temperature, T, is usually specified in Kelvin. The change in Gibbs free energy, ΔG, is the maximum amount of energy that can be obtained from the reaction in the form of useful work if the reaction takes place at constant pressure and temperature. The reaction will proceed spontaneously if ΔG is negative. And if ΔG is positive, the reaction will not take place spontaneously. The solution to this problem is shown below:
First, let's figure out how much heat is produced when one mole of C2H5OH is burnt.ΔHrxn = [2(moles of CO2)(-393.5 kJ/mol) + 3(moles of H2O)(-285.8 kJ/mol)] - [(moles of C2H5OH)(-277.7 kJ/mol)]ΔHrxn = [2(2.006 mol)(-393.5 kJ/mol) + 3(3.009 mol)(-285.8 kJ/mol)] - [1.003 mol(-277.7 kJ/mol)]ΔHrxn = -2043.5 kJ/mol. Now, we'll figure out the entropy change for the reaction.ΔSrxn = [2(moles of CO2)(213.8 J/mol-K) + 3(moles of H2O)(69.9 J/mol-K)] - [(moles of C2H5OH)(160.7 J/mol-K)]ΔSrxn = [2(2.006 mol)(213.8 J/mol-K) + 3(3.009 mol)(69.9 J/mol-K)] - [1.003 mol(160.7 J/mol-K)]ΔSrxn = -104.3 J/mol-KThe temperature in Kelvin is 25°C.273 + 25 = 298 KΔG = ΔH - TΔSΔG = -2043.5 kJ/mol - (298 K)(-104.3 J/mol-K)/1000ΔG = -2032.6 kJ/mol. Therefore, the maximum work that can be obtained by burning 1.003 mol of C2H5OH is 2032.6 kJ/mol, which is the value of ΔG.
To know more about Gibbs free energy visit
https://brainly.com/question/13795204
#SPJ11
Triphosphorous hexoxide formula
Answer:
P3O6
Explanation:
Tri=3 Hex=6
List three examples of a carbon reservoir.
Answer:
Oceans, Fossil fuels, atmosphere
Which group of nonmetals will react with group 1 metals to form a compound in a one-to-one ratio?.
Alkaline earth metals will react in a 1:1 ratio with group 16 nonmetals to generate a compound.
Our two ratios would combine. As a result of their greater positive charge and smaller iniquity. Compared to alkali metals, alkaline earth metals have a significantly stronger tendency to form a complex with the Lewis base.
Alkali metals, which contain a single valence electron, and the halogens react aggressively. The two components come together to create salt. For instance, the reaction between the alkali metal sodium (Na) and the halogen chlorine (Cl) yields table salt, or sodium chloride (NaCl).
The group 1 element Li, Na, K, Rb, Cs, and Fr are alkali metals. When sliced, the alkali metals are all supple, metallic, and lustrous.
As an illustration, each member of Group 1 surrenders one electron to become a 1+ cation. A 1- anion can be created by adding one electron to any element in Group 17. Ionic compounds can be created when elements from Groups 1 and 17 mix one to one.
Learn more about non-metals here:
https://brainly.com/question/16749127
#SPJ4
If the density of a gas is 1.2 g/L at 745 torr and 20 degree celsius, what is its molecular mass?R = 0.0821 L.atm/K.mol
The question requires us to calculate the molecular mass of a gas, given its density (1.2 g/L) and conditions of pressure (745 torr) and temperature (20°C).
Density is defined as the mass of a compound over its volume. From this definition, we can calculate the molecular mass of the gas knowing the density, as given by the question, and the volume of 1 mol of the gas.
\(\text{density = }\frac{mass}{\text{volume}}\to\text{mass = volume }\times\text{ density}\)We can calculate the volume of a gas considering the equation of Ideal Gases:
\(P\times V=n\times R\times T\)where P is the pressure of the gas, V is its volume, n is the number of moles, R is the constant of gases and T is the temperature.
Note that the constant of gases R was given in units of L.atm/K.mol, while the pressure and temperature were given in Torr and °C, respectively. Thus we need to convert these values to the appropriate units.
Knowing that 1 Torr corresponds to 0.00131579 atm:
1 Torr --------------------- 0.00131579 atm
745 Torr ---------------- x
Solving for x, we have that 745 Torr corresponds to 0.980 atm.
To convert the temperature from Celsius degrees to Kelvin, we must add 273.15:
T = 20 + 273.15 K = 293.15 K
Therefore, the pressure and temperature we'll use in our calculation are 0.980 atm and 293.15 K. Also, since we are calculating the molecular mass, we'll consider 1 mol of gas.
Rearranging the equation of ideal gases to calculate the volume and applying the values to the equation, we'll have:
\(\begin{gathered} P\times V=n\times R\times T\to V=\frac{n\times R\times T}{P} \\ V=\frac{(1mol)\times(0.0821L.atm/K.mol)\times(293.15K)}{(0.980\text{atm)}}=24.6L \end{gathered}\)Therefore, the volume of 1 mol of the gas under the conditions given is 24.6L.
Next, we'll use this value to calculate the molecular mass using the density given by the question:
\(\begin{gathered} \text{mass = volume }\times\text{ density} \\ \text{mass = 24.6L}\times1.2g/L \\ \text{mass = }29.5g/\text{mol} \end{gathered}\)Therefore, the gas given by the question presents 29.5g per mol.
Suppose that 5-ml containers of helium (He), neon (Ne), and argon (Ar) are at pressures of 1 atm,
2 atm, and 3 atm, respectively. The He and Ne are then added to the container of Ar.
a. What is the partial pressure of He in the container after the three gases are mixed?
b. What is the total pressure in the container after the three gases are mixed?
The total pressure in the container after the three gases are mixed is 6 atm and the partial pressure of He is 1 atm.
What is Dalton's Law of Partial Pressure ?According to Dalton's Law of Partial Pressure , the pressure exerted by a mixture of gas is equal to the sum of the partial pressure of the gases in the mixture.
P(total) = p₁ +p₂+p₃+.....
As the volume of the containers are same and the
n = 1*5/RT for Helium
n = 2*5 /RT for Neon
n= 3*5/RT for Argon
Mole fraction = moles of the element/Total moles
Moles fraction of Helium is
\(\rm \dfrac{1*5}{1*5+2*5+3*5}\)
= 1/6
Total Pressure in the container = 1 + 2 +3 = 6 atm
The partial pressure of Helium will be
=Mole fraction * Total pressure
=(1/6)*6 atm
= 1 atm , as the volume is same the temperature is same , the pressure will also be same.
To know more about Dalton's Law
https://brainly.com/question/14119417
#SPJ1
Only primary alcohols can be oxidized to carboxylic acids. T/F?
Answer: True. Only primary alcohols can be oxidized to carboxylic acids using an oxidizing agent such as potassium permanganate (KMnO4) or chromium trioxide (CrO3) in an acidic solution. Secondary alcohols can be oxidized to ketones, but not to carboxylic acids, while tertiary alcohols cannot be oxidized at all using these reagents.
Explanation:
Motion of falling object towards the earth is variable motion
Answer:
Yes , it is due to gravity , structure of earth,air resistance so ...
Motion of falling object towards the earth is variable . It is due to the gravity and air resistance.
What is gravity?
Gravity is a kind of force that attracts items to the earth's surface. Gravity causes items to accelerate as they descend to the ground. Acceleration refers to a change in velocity, which is a measurement of the speed as well as the direction of motion.
What is motion?An object's location changes with time, which is referred to as motion. Displacement, distance, velocity, acceleration, speed, and time are all mathematical words used to describe motion.
Therefore, motion of falling object towards the earth is variable . It is due to the gravity and air resistance.
To know more about motion and gravity.
https://brainly.com/question/4014727.
#SPJ2
what are the two products for when limestone decomposes?
Answer:
when limestone decomposes it forms calcium oxide and carbon dioxide
Answer:lidmestone on heating descomposes into quick lime anda carbón dioxide gas
Explanation:
when lidmestone is heated steongly the calciul carbonato ir contains absorba heat (endothermic) ando descomposes to forma calciul oxide
25.19 Draw the structures of the dipeptides that can be formed from the reaction between the amino acids glycine and alanine.
There are two possible dipeptides formed from the reaction between glycine and alanine: Gly-Ala and Ala-Gly.
A dipeptide is a molecule consisting of two amino acids joined together by a peptide bond. In the case of glycylalanine, glycine (the amino acid with the simplest structure) is bonded to alanine through a peptide bond. In the case of alanylglycine, alanine is bonded to glycine through a peptide bond. These dipeptides are formed through a condensation reaction where water is released as a byproduct.
Dipeptides are formed when two amino acids react through a condensation reaction, which results in the formation of a peptide bond. In this case, the amino acids involved are glycine (Gly) and alanine (Ala). Since there are two different amino acids, there are two possible combinations:
1. Glycine (N-terminal) + Alanine (C-terminal) = Gly-Ala
2. Alanine (N-terminal) + Glycine (C-terminal) = Ala-Gly
These represent the two dipeptides that can be formed from the reaction between glycine and alanine.
To know more about dipeptides, visit:
https://brainly.com/question/6194023
#SPJ11
What volume will 454 grams of hydrogen occupy at 1.05 atm and 55 degrees Celsius
5761.09L
Explanations:According to the ideal gas equation
\(PV=nRT\)where:
• P is the ,pressure ,of the gas in atm
,• V is the, volume ,in litres
,• n is the mole of hydrogen gas
,• R is the ,gas constant
,• T is the, temperature ,in Kelvin
Given the following parameters
P = 1.05atm
R = 0.082057 L*atm/mol*K
T = 55 + 273 = 328K
Determine the mole of hydrogen
\(\begin{gathered} n=\frac{mass}{molar\text{ mass}} \\ n=\frac{454}{2.02} \\ n=224.75moles \end{gathered}\)Determine the required volume
\(\begin{gathered} V=\frac{nRT}{P} \\ V=\frac{224.75\times0.082057\times328}{1.05} \\ V=\frac{6049.15}{1.05} \\ V=5761.09L \end{gathered}\)Hence the required volume of the gas is approximately 5761.09L
Seawater is 3.5% Sodium Chloride by mass. Sea Salt can contain about 10 % water.
How much water is removed from every Kilogram of Commercial Sea Salt?
10g water is removed from every Kilogram of Commercial Sea Salt
Answer:
900 g
Explanation:
90% of 1000 g is 900g
1. What class of drugs are being investigated in this study, and how do they get into our waterways? 2. What is a C-start and why is it important for larval fish survival? 3. What hypotheses are being tested in this investigation? 4. Briefly describe what the researchers found when they exposed larval fathead minnows to levels of antidepressants found in our waterways.
The effects of exposure were more pronounced in fish that had been raised in a less stressful environment, suggesting that environmental conditions can influence the impact of exposure to antidepressants.
1. The class of drugs being investigated in this study is antidepressants. They enter our waterways through excretion by individuals taking the medication, and disposal of unused medication into toilets or sinks that are connected to wastewater treatment plants.
2. C-start is an evasive maneuver that young fish use when they perceive a predator. This is important for larval fish survival because it helps them to avoid being eaten by predators.
3. In this investigation, researchers are testing two hypotheses. The first is that exposure to low levels of antidepressants can affect larval fathead minnows' behavior, and the second is that the effects of exposure will be more pronounced in fish that have been raised in a less stressful environment.
4. The researchers found that exposure to antidepressants at levels found in waterways can have a significant impact on the behavior of larval fathead minnows. Specifically, they found that the fish exposed to antidepressants were less likely to respond to the presence of predators, which could increase their risk of being eaten.
They also found that the effects of exposure were more pronounced in fish that had been raised in a less stressful environment, suggesting that environmental conditions can influence the impact of exposure to antidepressants.
To learn more about antidepressants,
https://brainly.com/question/28209828
#SPJ4
ULUI HIGISTUU 2 3 5 6 7 8 A manufacturer selected a metal to use in producing a lightweight button for clothing. A metal that has a density of 2.71 g/cm3was selected
Answer:
iiiiii<iiiiii
Explanation:
Answer:
4/J
Explanation:
Remember the triangle
m
v d
d=m/v
do this for the 4 questions.
1.7.36
2.10.5
3.1,846
4.2.71
so it would be 4
good luck!!!!
9. A tank truck carries 34 000 L of sulfuric acid. The density
of sulfuric acid is 1.84 kg/L. TAI
(a) What mass of sulfuric acid is in the truck?
Answer:
62,560 kgExplanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volume
From the question
volume = 34,000 L
density = 1.84 kg/L
We have
mass = 1.84 × 34,000 = 62,560
We have the final answer as
62,560 kgHope this helps you