Answer: 32g of oxygen and 4g of hydrogen were reacted in total.
Explanation:
To find out how many grams of reactants were reacted, we need to use the balanced equation of the reaction. The equation for the reaction between hydrogen and oxygen to produce hydrogen peroxide is:
2H2 + O2 --> 2H2O2
From the equation, we know that the reaction involves 2 moles of hydrogen and 1 mole of oxygen. We can use the balanced equation to determine the stoichiometry of the reaction, which tells us the relative number of moles of each reactant and product.
We know that 32g of oxygen was reacted, and since 1 mole of oxygen is equal to 16g, we can calculate the number of moles of oxygen by:
32g / 16g = 2 moles
We know that 2 moles of hydrogen are required for every mole of oxygen. so the number of moles of hydrogen is also 2 moles.
We know that 1 mole of hydrogen is equal to 2g, so we can calculate the number of grams of hydrogen by:
2 moles x 2g = 4g
Therefore, 32g of oxygen and 4g of hydrogen were reacted in total.
Calculate the relative molecular mass of hydrated Copper (II) tetraoxosulphate (VI) CuSO4.5H₂O (Cu = 64 S = 32 H = 1 0 = 16).
The relative molecular mass of hydrated Copper (II) tetraoxosulphate (VI) CuSO4.5H₂O is 249.
What is molecular mass?Molecular mass is a measure of the total mass of one mole of a substance, which is defined as the mass of the substance divided by the number of molecules it contains. It is typically expressed in g/mol and is also known as molar mass. Molecular mass is determined by the types and number of atoms that compose a molecule, and is an important factor in understanding the properties of a substance.
This is calculated by adding the atomic masses of all the atoms present in the compound.
The atomic mass of copper is 64, sulphur is 32, oxygen is 16, and hydrogen is 1.
So, the relative molecular mass of hydrated Copper (II) tetraoxosulphate (VI) CuSO4.5H₂O is 64 + 32 + (16*4.5) + (1*5) = 249.
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What is this called?
Answer:
2, 5 -dimethylheptane
Explanation:
Drawing the full structure would help you understand better
Which of the following statements about substances X and Y are true? Assume ideal behavior.
Choose one or more:
A. Y is the solvent in this solution.
B. The presence of Y in the solution lowers the vapor pressure of X.
C. If Y were not present, there would be more X particles in the gas above the liquid solution.
D. Pure Y has a higher vapor pressure than pure X.
The statements about substances X and Y are true are Y is the solvent in this solution, The presence of Y in the solution lowers the vapor pressure of X and if Y were not present, there would be more X particles in the gas above the liquid solution. Therefore, option A, B and C are correct.
What is the solution ?A mixture in which one substance dissolves in the other is called a solution. The solute is the substance that dissolves. The solvent is the substance that does not dissolve. Salt water is an example of a solution.
In a mixture called a solution, every component is well combined. Solutions can contain solids, liquids, and gases and are regarded as homogenous mixes. A solute and a solvent makeup a solution. Any substance that dissolves in a solvent is referred to as a solute.
Thus, option A, B and C are correct.
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For the reaction 2HNO3 + Mg(OH)2 → Mg(NO3)2 + 2H₂O, how many grams of magnesium nitrate are produced from 9 grams of nitric acid, HNO3 ?
At what temperature does Benzene boil when the external pressure is 440 torr
The boiling point of benzene when the external pressure is 440 torr is 80.1 °C (176.2 °F).
What is benzene?
Benzene is an organic compound composed of six carbon atoms in a ring structure, with one hydrogen atom attached to each carbon atom. It is a highly flammable, colorless liquid with a sweet smell. Benzene is a natural component of crude oil and is one of the most important organic chemicals used in industry. It is used in the production of plastics, resins, synthetic fibers, rubber, pesticides, detergents, drugs, and dyes. It is also used as a solvent for fats, oils, waxes, resins, and inks. Benzene is classified as a carcinogen and its exposure can cause a variety of adverse health effects, including acute myelogenous leukemia, lymphomas, and other forms of cancer.
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A 0.1 M solution is diluted by three orders of magnitude. What is the new concentration?
Answer:
So the new concentration of the solution is 0.0001M
Explanation:
To dilute a solution by three orders of magnitude, we need to add 3 zeroes, that is 10^3 times the original volume.
The new concentration would be 0.1M / (10^3) = 0.0001M (4 sig figs)
So the new concentration of the solution is 0.0001M
A 20 N force pulls to the right and friction pulls 5 N. If the mass is 5 kg, find acceleration
Answer:
Explanation:
Force = Mass x Acceleration
(20 - 5)N = 5kg x Acceleration
Acceleration = 15/5
= 3 N/kg
Phosphine contains 91.1 % P an 8.9% H. Water contain 88.8% of O and 11.2% of H.Phosphorus tetraoxide contains 56.4% of and 43.6% of O.Show that these data illustrate law of reciprocal proportions.
According to the law of reciprocal proportions, they should combine in the ratio of 10.24:7.92:1.29 by mass.
What is the law of reciprocal proportions ?According to the law of reciprocal proportions when two elements join to form more than one compound, the weights of one element that combine with a fixed weight of the another are in a ratio of small whole numbers.
In phosphine, phosphorus = 91.1 parts and hydrogen = 8.9 parts
So, 8.9 pads of hydrogen combine with phosphorus = 91.1 parts .
1 part of hydrogen combine = 91.1 / 8.9
= 10.24 parts
Similarly,
for water 88.8 / 11.2
= 7.92 parts of hydrogen
For Phosphorus tetra oxide
= 56.4 / 43.6
= 1.29 parts
Thus, According to the law of reciprocal proportions, they should combine in the ratio of 10.24:7.92:1.29 by mass.
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NEED ASAP!
An absorption measurement with a 1 cm path length yields a reading of 0.002 absorbance units with a noise of 0.0005 absorbance units and a mean noise reading of 0 for 5 scans averaged together. Assuming the noise for a single scan does not change if the path length is increased to 5 cm and the number of scans is increase to 65, what is the signal to noise of the new measurement. Remember signal averaging
The signal-to-noise ratio (S/N) is a measure of the strength of the signal relative to the noise. In this case, the signal is the absorbance reading of 0.002 absorbance units, and the noise is the standard deviation of the noise, which is 0.0005 absorbance units.
The S/N for the 1 cm path length measurement is:
S/N = (signal) / (noise) = 0.002 absorbance units / 0.0005 absorbance units = 4
If the path length is increased to 5 cm and the number of scans is increased to 65, the signal will also increase by a factor of 5, but the noise will not change. Therefore, the signal will be 5 times larger and the noise will be the same, so the S/N will increase.
The signal for the new measurement is 5 * 0.002 = 0.01 absorbance units
The S/N for the new measurement is:
S/N = (signal) / (noise) = 0.01 absorbance units / 0.0005 absorbance units = 20
When you increase the path length by 5 times, the signal increases by 5 times, but the noise remains the same. Therefore, the signal-to-noise ratio will increase by a factor of 5. Similarly when you increase the number of scans, you are averaging the signal, which will reduce the noise, but the signal will remain the same. So the signal-to-noise ratio will increase.
A student made a sketch of a potential energy diagram to represent an endothermic reaction.
Explain, using complete sentences, why the diagram made by the student is correct or incorrect. Be sure to also explain what the values of X and Y represent. (10 points)
Answer:
The student's diagram is correct. The potential energy on the x-axis is increasing, and the potential energy on the y-axis is decreasing, which accurately displays an increase in energy (heat) being absorbed by the reaction. The value of X represents the energy of the reactants, while the value of Y represents the energy of the products. This indicates the reaction is endothermic, as the reactants have a lower energy than the products, meaning energy had to be absorbed from the environment in order to reach a stable state.
Read the information in the table below:
Which type of reaction is represented by B? (5 points)
Endothermic reaction
Exothermic reaction
Reaction between liquids
Reaction between solids
Answer:
it's exothermic reaction, becasue it have negative energy and the temperature increases
How mans, gram of HBr would exactly be
required to react with 2g of propyne ?
(Br=80,H=1, c=12) C3 H4+2HBr–> C3 H6 Br2
Answer:
The number of moles of HBr required to react with 2 g of propyne can be calculated by using the balanced chemical equation:
C3 H4 + 2HBr → C3 H6 Br2
The molar mass of propyne is (3 x 12 + 4 x 1) = 40 g/mol
So, 2 g of propyne is equal to 2/40 = 0.05 moles of propyne.
Since 2 moles of HBr are required to react with 1 mole of propyne, then 0.05 moles of propyne would require 0.05 x 2 = 0.1 moles of HBr.
Finally, to find the number of grams of HBr, we multiply the number of moles by its molar mass, which is (1 x 1 + 80 x 1) = 81 g/mol
So, 0.1 moles of HBr is equal to 0.1 x 81 = 8.1 g of HBr.
Answer the questions for 100 points!
6) The constant is the amount of beverage in each sample. Option C
7) Greater amount of carbon dioxide dissolve at lower temperatures
8) It shows that the hypothesis should be thrown away. Option D
9) The independent variable is the temperature. Option B
What is an experiment?When we talk about an experiment, then we would have to look at the interplay of one or more variables. It is common that when we are doing an experiment, the dependent variable would have to interface with the independent variable.
We can see that in the experiment, we are trying to find out the impact of the temperature on the mass of the carbon dioxide.
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Suppose a beaker of orthoxylene is put inside a sealed tank containing orthoxylene gas at 142. degree C and 893. torr. After ten minutes, will there be more liquid in the beaker, less liquid, or the same amount?
The beaker of orthoxylene was put inside a sealed tank containing orthoxylene gas at 142. degree C and 893. torr will have the same amount of liquid inside it after ten minutes because the system is a closed system as none of the liquid's vapor escapes.
The correct option is the same amount.
A closed system allows energy to enter and exit but not matter to enter or exit. About a closed system is a covered pot on the burner. Both matter and energy cannot enter or leave an isolated system. A thermos or cooler is about as isolated a system as there is.
The beaker of orthoxylene that was put inside a sealed tank containing orthoxylene gas at 142 degrees C and 893 torr is a closed system.
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A compound melts at 20°C.
What kind of structure do you think it has?
The compound is non polar covalent in its structure as said above.
What is the melting point?Let us recall that the melting point has to do with the temperature at which there is the conversion of the solid to a liquid. We know that the melting point of the compound would depend on the structure of the compound.
If the compound would have a melting point that is about 20°C, the implication is that the compound is not be held by very strong intermolecular forces hence it must be covalent.
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MAKE NOTES ON METHOD OF MIXTURES ELECTRICAL METHOD.
The Method of Mixtures Electrical Method is a method used to determine the electrical conductivity of a material.
What is Electrical Method?The Electrical Method is a geophysical prospecting technique that uses electrical resistivity to map subsurface features, such as geological structures, fractures, and mineral deposits.
It involves measuring the amount of current that passes through a mixture of two materials under the application of a known voltage. The electrical conductivity of each material can then be determined by calculating the ratio of the current to the applied voltage. The electrical conductivity obtained from the Method of Mixtures Electrical Method can be used to characterize materials such as semiconductors and insulators.
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How many moles are in 78.3g of ammonium sulfite?
Answer:
To find the number of moles in 78.3 grams of ammonium sulfite, you would divide the mass by the molar mass of the substance. The molar mass of ammonium sulfite is (14.0067 + 14.0067 + 32.065 + 64.0638) g/mol = 124.1472 g/mol.
78.3 g / 124.1472 g/mol = 0.63 moles
Explanation:
Answer:
0,6746 moles of ammonium sulfite
Explanation:
(NH₄)₂SO₃ - ammonium sulfite [tex]\equiv \, N_2H_8SO_3[/tex]
Atomic weight of each element:
N = 14.00 * 2 = 28
H = 1.00 * 8 = 8
S = 32.065 * 1 = 32.065
O = 16 * 3 = 48
Total atomic weight = 28 + 8 + 32.065 + 48
Total atomic weight = 116,065 gr/mol
[tex]78.3\,g \,* \frac{1mol\,of\, (NH_4)_2SO_3}{116.065g \, \,of \, (NH_4)_2SO_3 } \approx 0,6746\, moles \, of \, (NH_4)_2SO_3[/tex]
The organic compound di‑n‑butyl phthalate, C16H22O4(l), is sometimes used as a low‑density (1.046 g⋅mL−1) manometer fluid. Compute the pressure in torr of a gas that supports a 571 mm column of di‑n‑butyl phthalate. The density of mercury is 13.53 g⋅mL−1.
The pressure of a gas that supports a 571 mm column of di‑n‑butyl phthalate is 31.85 torr.
According to the ideal gas equation
P × V = n × R × T
n = number of moles (mol)R = gas constantAccording to Stoichiometry n = m ÷ M or n m ÷ A
m = mass (grams) M = molecular mass (g/mol)A = atomic mass (g/mol)A for mercury (Hg) = 200.59 g/molP × V = n × R × T
P × V = (m/M) × R × T
P × M = (m/V) × R × T
The formula for densityP × M = ρ × R × T
For mercury
For 1 mm mercury, the pressure is 1 torrh = 571 mmP mercury = 571 mm × 1 torrFor C₁₆H₂₂O₄
RT = 8,465.402 torr mL mol⁻¹ because same condition as mercuryρ = 1.046 g/mLP × M = ρ × R × TLearn more about ideal gas equation here: https://brainly.com/question/27751527
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The organic compound di‑n‑butyl phthalate, C16H22O4(l), is sometimes used as a low‑density (1.046 g⋅mL−1) manometer fluid.31.85 torr is the pressure in torr of a gas that supports a 571 mm column of di‑n‑butyl phthalate. The density of mercury is 13.53 g⋅mL−1.
What is an ideal gas equation ?The ideal gas equation is represented as: PV = nRT.
In this equation, P refers to the pressure of the ideal gas, V is the volume of the ideal gas, n is the total amount of ideal gas that is measured in terms of moles, R is the universal gas constant, and T is the temperature.
By an ideal gas equation
P × V = n × R × T
Where,
n = number of moles (mol)
R = gas constant
The value of R differs depending on the units used
T = temperature
P = pressure
V = volume
According to Stoichiometry
n = m ÷ M or n m ÷ A
Where,
m = mass (grams)
M = molecular mass (g/mol)
A = atomic mass (g/mol)
A for mercury (Hg) = 200.59 g/mol
A to C = 12 g/mol
A for H = 1 g/mol
A for O = 16 g/mol
M for C₁₆H₂₂O₄
= (16 × 12) + (22 × 1) + (4 × 16)
= 192 + 22 + 64
= 278
P × V = n × R × T
P × V = (m/M) × R × T
P × M = (m/V) × R × T
The formula for density
ρ = m/V
ρ = density
P × M = ρ × R × T
For mercury
For 1 mm mercury, the pressure is 1 torr
h = 571 mm
P mercury = 571 mm × 1 torr
P mercury = 571 torr
ρ = 13.53 g/mL
P × M = ρ × R × T
P × A = ρ × R × T
571 × 200.59 = 13.53 × R × T
RT = 114,536.89 / 13.53
RT = 8,465.402 torr mL mol⁻¹
For C₁₆H₂₂O₄,
RT = 8,465.402 torr mL mol⁻¹ because same condition as mercury
ρ = 1.046 g/mL
P × M = ρ × R × T
P × 278 = 1.046 × 8,465.402
P = 8,854.81 / 278
P = 31.85 torr
Thus, 31.85 torr is the pressure in torr of a gas that supports a 571 mm column of di‑n‑butyl phthalate. The density of mercury is 13.53 g⋅mL−1.
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What is the thermal energy needed to completely vaporize 18.02 g of water at 100 degrees celsius?
The heat that we are going to need so as to be able to vaporize the water is 40.4 kJ.
What is the thermal energy?We know that the term thermal energy has to do with the energy that can be supplied to the water as heat when we raise the temperature of the water. In this case, we can see that we are dealing with the thermal energy needed to completely vaporize 18.02 g of water at 100 degrees Celsius.
We know that the heat that is required can be obtained from the formula;
H = mL
m= mass of the water
L = latent heat of vaporization of water
H = 18.02 g * 2240 J/g
H = 40.4 kJ
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What is the formula for photosynthesis and cellular ?
Answer:
Cellular Respiration: C6H12O6 + 6O2 → 6CO2 + 6H2O.
Photosynthesis: 6CO2 + 6H2O → C6H12O6+ 6O.
Explanation:
:)
Which term would be directly related to the science of ecology?
digestive system
taxonomy
circulatory system
population growth
Answer:
d. population growth.
Explanation:
this molecule has the condensed structure c h 2 c (c 6 h 5) c h 2 c h 3. c 6 h 5 is a six carbon ring with alternating double bonds. name
This molecule is known as 2-(Phenylethyl) tetrahydrofuran.
Benzene is a colourless liquid chemical at room temperature. It is utilised primarily as a solvent in the pharmaceutical and chemical industries, as a starting material and an intermediate in the synthesis of numerous chemicals, and in gasoline. Both natural and man-made processes produce benzene.
Benzene is one of the most important organic compounds with the chemical formula C₆H₆. Benzene is the parent compound of various aromatic compounds.
2-(Phenylethyl) tetrahydrofuran has a ring structure of benzene (C₆H₅), and an alkyl group (CH₂CH₃) attached to it. The molecule has a total of 16 carbon atoms and 33 hydrogen atoms.
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A compound is found to contain 30.4% nitrogen and 69.6% oxygen. If it has a molecular mass of 92.0, what is its molecular formula?
Answer:
Molecular formula = N2O4
Explanation:
Step 1: Assume that the mass of a compound is 100%
Step 2: Calculate the number of moles of each element
Step 3: Represent an empirical formula
Step 4: Divide the number of moles of each element by the least number of moles
Step 5: Write the empirical formula
Step 6: Calculate the empirical mass
Step 7: Represent a molecular formula
Step 8: Solve for n by dividing molecular mass by empirical mass
Step 9: Multiply the subscripts of the empirical formula by the value of n to obtain the molecular formula
which of the following liquids would have the highest viscosity at the same temperature? group of answer choices A. h2nch2ch2nh2 B. ch3ch2cl C. ch3ch2ch2nh2 D. c2h5oc2h5
C₂H₅OC₂H₅ (Diethyl ether) has the highest viscosity at same temperature.
The order of viscosity possessed by the different fluids at same temperature is given below.
C₂H₅OC₂H₅ (Diethyl ether)
H₂NCH₂CH₂NH₂ (Ethylene diamine)
CH₃CH₂Cl (Chloroethane)
CH₃CH₂CH₂NH₂ (propan-1-amine)
All the above molecules form hydrogen bonding. As, the viscosity could be directly related to hydrogen bonding tendency, ethylene diamine will be more viscous at a given temperature, as it could form hydrogen bonding through two NH₂ groups.
Viscosity is defined as the resistance of a fluid (liquid or gas) to a change in shape, or movement of neighboring portions relative to one another. Viscosity represents opposition to flow. The reciprocal of the viscosity is defined as the fluidity, a measure of the ease of flow.
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hydrogen and oxygen reacts chemically to form water. how much water would form if 14.8 grams of hydrogen reacted with 34.8 grams of oxygen
The mass of water that can be obtained is 2.2 g of water.
What is the mass of the water?We know that in the case that we have here, we are going to depend on the stoichiometry of the reaction and this is very important in the determination of the amount of the water that can be formed.
Now we can see that the reaction equation can be written from the fact that; [tex]2H_{2} (g) + O_{2} (g) ---- > 2H_{2} O(g)[/tex]. Then we can see that in this kind of chemical reaction we have to apply the stoichiometry.
Number of moles of the hydrogen = 14.8g/2 g/mol = 7.4 moles
Number of moles of oxygen = 34.8 g/32 g/mol = 1.1 moles
Given that 2 moles of hydrogen reacts with 1 mole of oxygen
7.4 moles of hydrogen reacts with 7.4 * 1/2
= 3.7 moles
Hence oxygen is the limiting reactant.
1 mole of oxygen produces 2 moles of water
1.1 moles of oxygen would produce 1.1 * 2/1
= 2.2 moles of water
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The value of the Euro was recently $1.35 U.S. and the price of 1.00 liter of gasoline in France is 1.42 Euro. How many gallons of gas can you buy in France for $1.00?
How are atoms of sodium and chlorine similar and different from one another?
Answer:
Explanation:
Atoms of sodium and chlorine are both elements, meaning they are made up of only one type of atom. Both have an atomic number of 11, which means they have 11 protons in their nucleus, but the number of neutrons and electrons differ. Sodium has 12 neutrons and 11 electrons, while chlorine has 17 neutrons and 17 electrons.
Atoms of sodium and chlorine are also both reactive, meaning they form chemical bonds with other elements. However, sodium is more reactive than chlorine, which is why it often forms compounds with other elements, such as sodium chloride (NaCl).
Atoms of sodium and chlorine are also similar in that they both have the same number of electrons in their outer shells. This means they can both form two covalent bonds with other elements. However, because the number of electrons and neutrons in each atom is different, the strength of the bonds they form will differ.
Overall, atoms of sodium and chlorine are similar in that they both have 11 protons and can form two covalent bonds, but they differ in their number of neutrons and electrons, which affects the strength of the bonds they form and their reactivity.
An unknown gas effuses at a rate 1.50 times the rate of COCl₂. What is the molar mass of the unknown gas?
Answer:
The molar mass of an unknown gas can be determined using the concept of effusion. Effusion is the process of a gas passing through a small hole or porous partition. The rate of effusion of a gas is inversely proportional to the square root of its molar mass. This relationship is described by the Graham's law of effusion.
Explanation:
Graham's law of effusion states that the rate of effusion of a gas is inversely proportional to the square root of its molar mass.
R = k √M
Where R is the rate of effusion, k is a constant, and M is the molar mass of the gas.
If we know the rate of effusion of COCl2 and the rate of effusion of an unknown gas and we know that the unknown gas effuses at a rate 1.5 times the rate of COCl2.
R unknown = 1.5 * R COCl2
We can use this information to find the molar mass of the unknown gas.
M = (R COCl2 / (1.5 * R unknown) )²
If we know the molar mass of COCl2, we can substitute it in the equation and solve for the molar mass of the unknown gas.
It's worth noting that this problem requires you to know the molar mass of COCl2 which is not provided in the question. And also it's important to know that the values of the constant k in the equation for the different gases are not the same, so you need to use the same gas as reference.
3 Cu + 8HNO3 --> 3 Cu(NO3)2 + 2 NO + 4 H₂O In the above equation how many grams of water can be made when 9 grams of HNO3 are consumed?
Answer:
It looks like the equation is already balanced for you, so the first step will be to convert 144.1 grams of HNO3 to moles.
A bone taken from a garbage pile buried under a hill-side had 14C/12C ratio 0.477 times the ratio in a living plant or animal. What was the date when the animal was buried?
Answer:
The date when the animal was buried can be estimated by using the decay rate of Carbon-14. The half-life of Carbon-14 is 5,730 years, so the date when the animal was buried can be estimated by taking the half-life and multiplying it by the logarithm of the ratio of the 14C/12C ratio of the bone and the 14C/12C ratio of a living plant or animal. In this case, 5,730 years x log(0.477) = 45,906 years ago.
Explanation:
