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
DedPeter [7]
2 years ago
10

When 10.0 grams of ch4 reacts completely with 40.0 grams of o2 such that there are no reactants left over, 27.5 grams of carbon

dioxide are formed. how many grams of water are formed? ch4+ 2o2 â co2 + 2h2o?
Chemistry
1 answer:
Zina [86]2 years ago
8 0

The balanced equation for the reaction is :-

CH₄(g) + 2O₂(g)  ---------> CO₂(g) + 2H₂O(l)

Molar mass of CH₄ = 16 g/mole

Molar mass of O₂ = 32 g/mole

Molar mass of H₂O = 18 g/mole

Molar mass of CO₂ = 44 g/mole

Now we calculate the number of moles of reactants,

moles of CH₄ = mass of CH₄/molar mass of CH₄ = 10/16 = 0.625

Moles of O₂ = mass of O₂/molar mass of O₂ = 40/32 = 1.25

Now, as per the balanced reaction, for complete reaction to occur, one mole of CH₄ require 2 moles of O₂

Thus, 0.625 moles of CH₄ requires 1.25 moles of O₂

both CH₄ and O₂ are present in the exact required quantity.

Hence, moles of CO₂ formed = moles of CH₄ reacted = 0.625

Mass of CO₂ formed = moles of CO₂ x Molar mass of CO₂ = 0.625 x 44 = 27.5g

Moles of H₂O formed = moles of O₂ reacted = 1.25g

<span>Thus, mass of H</span>₂O formed = moles of H₂O x molar mass of H₂O = 1.25 x 18 = 22.5g

You might be interested in
In an era of bad harvests, famine, and rioting, the French government took steps to improve the worsening financial crisis. What
sukhopar [10]

Answer:

The government raised taxes

Explanation:

France had monarchy as its form of government. After the King of France had borrowed heavily to retain his extravagant lifestyle as well as the fact that the Kingdom of France was largely indebted, the king had no other option but to increase taxes paid by commoners in France.

This happened in an era of bad harvests and famine. The commoners depended mostly on bread to survive. This made the cost of bread to alarmingly increase and most people were hungry and starving.

These happenings led to the French revolution.

4 0
3 years ago
Read 2 more answers
50 POINTS AND BRAINLIEST
Debora [2.8K]

Answer:

The answer is burning wood

Explanation:

4 0
2 years ago
Read 2 more answers
The ability to do work or cause change is
Ilia_Sergeevich [38]
The ability to do work or cause change is
Energy
4 0
2 years ago
Do all waves need a material to travel through? HELPPPP
Natasha2012 [34]
No. 
Electromagnetic waves can travel without a medium.

hope this helps and have a great day :)



7 0
3 years ago
What did scientists discover when they arranged elements in order of increasing atomic mass?
asambeis [7]
<span>The scientists discovered that when they organized elements in order of increasing atomic mass there is a pattern of repetition of properties (A). The periodic law was developed by Dmitri Mendeleev and Lothar Mayer in 1869. They worked independently of each other and both created a periodic table. They both arranged the items on the table by weight and both suggested that certain properties of the elements recur. The Mendeleev table is the most important table because the values for the atomic mass are the most accurate.</span>
4 0
3 years ago
Other questions:
  • Which of the following describes the arrangement of valence electrons in a bond between H and F?
    5·1 answer
  • The atomic number of Zn2+ gives us the information about
    11·1 answer
  • Write a balanced chemical equation for the standard formation reaction of gaseous formaldehyde CH2O
    10·1 answer
  • predict where an unknown element that has these properties could fit in the periodic table 62 protons and electrons
    10·1 answer
  • Jay wants to know how the amount of acidity in rainwater influences the weathering rate of limestone.
    10·2 answers
  • What is the maximum number of d orbitals in a principal energy level?
    14·2 answers
  • The coal with the highest energy available per unit burned is
    6·1 answer
  • In this stoichiometry problem, determine the limiting reactant.
    9·1 answer
  • A sample of krypton gas collected at a pressure of 1.31 atm and a temperature of 26.0°C is found to occupy a volume of 23.3 lite
    8·1 answer
  • A trapezoid is broken into 2 triangles and 1 rectangle. The rectangle has a base of 1 meter and height of 4 meters. Both triangl
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!