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
ANEK [815]
3 years ago
11

Gaseous hydrogen and oxygen can be prepared in the laboratory from the decomposition of gaseous water. The equation for the reac

tion is2H2O(g) --> 2H2(g)+O2(g)Calculate how many grams of O2(g) can be produced from 42.6 grams of H2O(g).
Chemistry
2 answers:
monitta3 years ago
4 0

Answer:

  • 75.5 g O₂ (g) can be produced from 42.6 g of H₂O (g)

Explanation:

<u>1) Balanced chemical equation (given):</u>

  • 2H₂O(g) → 2H₂(g) + O₂(g)

<u>2) Mole ratios:</u>

  • 2 moles H₂O(g) : 2 moles H₂(g) : 2 moles O₂(g)

<u>3) Calculate the number of moles of reactant (H₂0):</u>

  • number of moles = mass in grams / molar mass

  • molar mass of water: 18.015 g/mol

  • mass in grams of water: 42.6 g

  • number of moles = 42.6 g / 18.05 g/mol = 2.36 moles H₂O

<u>4) Set a proportion using the mole ratio  O₂ to H₂O and the actual number of moles of H₂O:</u>

  • 2 moles O₂ / 2 moles H₂O = x / 2.36 moles H₂O

  • x = 2.36 moles O₂

<u>5) Convert 2.36 moles O₂ to grams:</u>

  • mass in grams = number of moles × molar mass

  • mass = 2.36 moles × 32.00 g/mol = 75.5 g O₂
maw [93]3 years ago
4 0

Answer:

37.87 g of oxygen can be produced from the 42.6 grams of H2O

Explanation:

From the question, the following equation shows the decomposition of gaseous water

2H₂O(g) ⇒ 2H₂(g) + O₂(g)

where atomic mass of hydrogen is 1 g/mol and atomic mass of oxygen is 16 g/mol

The molar mass of 2H₂O is;

2[(2 ×1) + (16 × 1)]

2(2+16) =  <u>36 g</u>

The molar mass of O₂ is;

2 × 16 = <u>32 g</u>

Hence, it can be deduced that 36 g of water produced 32 g of oxygen, hence 42.6g of water will produce how many grams of oxygen (represented as X)

∴ 36 ⇒ 32

42.6 ⇒ X

X = 42.6 × 32/36

X = 37.87 g

You might be interested in
What is the best definition of the enthalpy change Hr
Gre4nikov [31]

Answer:

<em>The flow of thermal energy in a system, at constant atmospheric pressure AND at thermodynamic standard temperature and pressure.</em>

5 0
2 years ago
What reaction conditions most effectively conver a cabocxylic acid to a methly ester?
VLD [36.1K]

Answer:

Esterification reaction

Explanation:

When we have to go from an acid to an ester we can use the <u>esterification reaction</u>. On this reaction, an alcohol reacts with a carboxylic acid on acid medium to produce an ester and water. (See figure).  

In this case, we need the <u>methyl ester</u>, therefore we have to choose the <u>appropriate alcohol</u>, so we have to use the <u>methanol</u> as reactive if we have to produce the methyl ester.

7 0
3 years ago
LOS AMOOOO 1 AL 40 COMENTÉN​
OleMash [197]

Answer:

0 ni siquiera te conozco

Explanation:

6 0
3 years ago
Which type of environmental scientist is likely to study how different species of birds interact?
Reptile [31]
Answer: D. Ecologist

Explanation: an ecologist is someone who studies the interactions of different organisms. An ecologist would be a type of scientist who would most likely study the interactions of birds
3 0
2 years ago
Read 2 more answers
Why are engineers an important part of the space exploration team?
Lelu [443]
A) B). That’s it I hope it’s help.
8 0
2 years ago
Other questions:
  • "what percentage of the solar nebula's mass consisted of elements besides hydrogen and helium gases?"
    5·1 answer
  • What is the volume of a box measuring 3cmX6cmX4cm
    14·1 answer
  • When a neutral atom loses an electron what happens to its size
    6·1 answer
  • Longitudinal waves compress the medium they travel though. One example of a longitudinal wave is a
    8·2 answers
  • Why are stomates important for gas exchange and photosynthesis?
    7·1 answer
  • Explain why decomposition uses solar energy
    9·1 answer
  • Is this equation completely balanced?
    14·1 answer
  • Which sentence best illustrates the idea outlined above
    12·2 answers
  • A sealed container is heated from 110K to 175K. The gas begins at a volume of 95L, what is the new volume of the gas upon heatin
    7·1 answer
  • What is the mass of 3.0 mole of N20?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!