1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
GaryK [48]
3 years ago
14

The molar mass of oxygen gas (O2) is 32.00 g/mol. The molar mass of C3H8 is 44.1 g/mol.

Chemistry
2 answers:
alexira [117]3 years ago
5 0
<span>the balanced chemical equation for the reaction is as follows;
 C</span>₃H₈ + 5O₂ ---> 3CO₂ + 4H₂<span>O
                   
stoichiometry of </span> C₃H₈ to O₂ is 1:5
   
number of moles of  C₃H₈ reacted - 0.025 g / 44.1 g/mol = 0.000567 mol according to molar ratio of 1:5
number of O₂ moles required are 5 times the amount of  C₃H₈ moles reacted therefore number of O₂ moles required - 0.000567 x 5 = 0.00284 mol .
mass of O₂ required - 0.00284 mol x 32.00 g/mol = 0.091 mol .
 answer is 0.091 mol
Bumek [7]3 years ago
4 0

0.091 is correct on Edgnty!

You might be interested in
Question 3 (1 point)<br> What is the relationship between a chromosome and DNA?
creativ13 [48]

Answer:chromosome is made of DNA. DNA is double helix structure made of sugar, phosphorus and nitrogen bases.

Explanation:

3 0
3 years ago
A student prepared a stock solution by dissolving 10.0 g of KOH in enough water to make 150. mL of solution. She then took 15.0
yanalaym [24]

Answer: The concentration of KOH for the final solution is 0.275 M

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.

Molarity=\frac{n\times 1000}{V_s}

where,

n = moles of solute

 V_s = volume of solution in ml = 150 ml

moles of solute =\frac{\text {given mass}}{\text {molar mass}}=\frac{10.0g}{56g/mol}=0.178moles

Now put all the given values in the formula of molality, we get

Molality=\frac{0.178\times 1000}{150}=1.19M

According to the dilution law,

C_1V_1=C_2V_2

where,

C_1 = molarity of stock solution = 1.19 M

V_1 = volume of stock solution = 15.0 ml

C_2 = molarity of diluted solution = ?

V_2 = volume of diluted solution = 65.0 ml

Putting in the values we get:

1.19\times 15.0=M_2\times 65.0

M_1=0.275M

Therefore, the concentration of KOH for the final solution is 0.275 M

5 0
3 years ago
Balance the equation
andrezito [222]
Balanced equation: shown in photo

6 0
2 years ago
It has been suggested that hydrogen gas obtained by the decomposition of water might be a substitute for natural gas (principall
Aleks [24]

Answer:

Hydrogen: -141 kJ/g

Methane: -55kJ/g

The energy released per gram of hydrogen in its combustion is higher than the energy released per gram of methane in its combustion.

Explanation:

According to the law of conservation of the energy, the sum of the heat released by the combustion and the heat absorbed by the bomb calorimeter is zero.

Qc + Qb = 0

Qc = -Qb  [1]

We can calculate the heat absorbed by the bomb calorimeter using the following expression.

Q = C . ΔT

where,

C is the heat capacity

ΔT is the change in the temperature

<h3>Hydrogen</h3>

Qc = -Qb = -C . ΔT = -(11.3 kJ/°C) . (14.3°C) = -162 kJ

The heat released per gram of hydrogen is:

\frac{-162kJ}{1.15g} =-141 kJ/g

<h3>Methane</h3>

Qc = -Qb = -C . ΔT = -(11.3 kJ/°C) . (7.3°C) = -82 kJ

The heat released per gram of methane is:

\frac{-82kJ}{1.50g} =-55kJ/g

3 0
3 years ago
How does a tiny seed turn into a tree overtime?
12345 [234]

Answer:

A group of cells ready to form roots a stem and the first leaves

3 0
3 years ago
Other questions:
  • Plz help will give brainliest, 50 pts!!! use your knowledge of the law of conversation of mass to answer the following question:
    11·1 answer
  • Pickles are preserved by soaking cucumbers in a vinegar solution what are some properties of these pickles
    15·1 answer
  • Why is it impossible for a machine to give you more energy output than the amount of energy put into it?
    11·1 answer
  • Formic acid (HCO2H) has a dissociation constant of 1.8 x 10^-4 M. The acid dissociates 1:1. What is the [H+] if 0.35 mole of for
    15·1 answer
  • What is the energy change per gram of ice when an iceberg composed of pure water, cp = 2.06 j/(gk, is heated from -25°c to -15°c
    13·1 answer
  • What is the atomic mass of an element is equal to?
    6·2 answers
  • What are some of the ways that people can Reduce their use of fossil fuels?
    14·2 answers
  • Is it possible to have more atoms on the product side of a chemical reaction than there are on the reactant side? Explain why or
    13·1 answer
  • An unknown weak base with a concentration of 0.0910 M has a pH of 10.50. What is the Kb of this base
    12·1 answer
  • What type of chemical bond holds the sulphur and fluorine atoms together in sulphur hexafluoride molecules?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!