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
Marina86 [1]
3 years ago
13

Hydrogen fuel cells are a promising alternative to gasoline engines in part because they release water instead of carbon dioxide

. In a hydrogen fuel cell, hydrogen gas (H2) and oxygen gas (02) react to make water as shown below. Which of the following statements is a true statement about how this reaction occurs? 2H2(g) + O2(g) → 2 H2O(g) A.A molecule of H2 and a molecule of o2 collide B.Two molecules of H2 and a molecule of O2 must collide at one time C. An O-H bond must break. D.An H-H bond must form E.The reactants must undergo a change of state for this reaction to occur
Chemistry
2 answers:
just olya [345]3 years ago
7 0

Answer:

From the equation

2H2(g) + O2(g) → 2 H2O(g

it is obvious as hydrogen fuels are promising alternative Two molecules of H2 and a molecule of O2 must collide at one time is the best option.

enot [183]3 years ago
6 0

Answer:

The correct answer is option (B) Two molecules of H2 and a molecule of O2 must collide at one time

Explanation:

2H2(g) + O2(g) → 2 H2O(g)

   2             1            2

Considering the given reaction, for water molecule to be form, two molecules of hydrogen and one molecule of oxygen must collide at the same time. The product obtained from the collision is two molecules of water as steam. 2 H2O(g)

You might be interested in
An Earth-like planet is 500 light years away why is this an Obstacle for a manned Space mission?
maxonik [38]

Answer:c the correct technology cannot support this mission

Explanation:

3 0
3 years ago
Read 2 more answers
When sulfate (SO42-) serves as the electron acceptor at the end of a respiratory electron transport chain, the product is?
o-na [289]

When sulfate (SO₄²⁻) serves as the electron acceptor at the end of a respiratory electron transport chain, the product is hydrogen sulfide (H₂S).

How sulfate acts as electon acceptor and electron donor?

  • Sulfate (SO₄²⁻) is used as the electron acceptor in sulfate reduction, which results in the production of hydrogen sulfide (H2S) as a metabolic byproduct.
  • Many Gram negative bacteria identified in the -Proteobacteria use sulfate reduction, which is a rather energy-poor process.
  • Gram-positive organisms connected to Desulfotomaculum or the archaeon Archaeoglobus also utilise it.
  • Electron donors are needed for sulfate reduction, such as hydrogen gas or the carbon molecules lactate and pyruvate (organotrophic reducers) (lithotrophic reducers).

Learn more about the Electron transport chain with the help of the given link:

brainly.com/question/24372542

#SPJ4

3 0
2 years ago
Which postulate of Dalton's atomic theory is the result of the law of conservation of mass
creativ13 [48]

The postulate of Dalton's atomic theory which is a result of the law of conservation of mass is: Atoms are indivisible particles, which can neither be created nor destroyed in a chemical reaction.

8 0
3 years ago
The specific heat of water is 4.186 J/g°C. A sample of 40. g H subscript 2 O is at an initial temperature of 91.0 °C. If the sam
kati45 [8]
The is 83 degrees outside
7 0
3 years ago
The chemical formula for glucose (sugar) is C6H12O6. What are the individual numbers called in a chemical formula?
givi [52]

The individual numbers which are present in chemical formula is subscript.

<h3>What is chemical formula?</h3>

Chemical formula of any compound of chemistry consist more than one atoms in it and gives idea about the number of atoms present in that compound.

Given chemical formula of glucose is C₆H₁₂O₆.

In the given chemical formula of glucose, number which shows the amount of carbon, hydrogen and oxygen are known as subscripts.

Hence, individual number are subscript.

To know more about chemical formula, visit the below link:
brainly.com/question/1603500

#SPJ1

8 0
1 year ago
Other questions:
  • What is the 3rd noble gas
    7·1 answer
  • A reaction occurs when one compound reacts and is broken down into different elements or simpler compounds.
    14·2 answers
  • What is the mass of an empty film canister?
    7·1 answer
  • Which of the following is not part of Dalton's atomic theory?
    11·1 answer
  • 12. What is the name of the compound MnF,? (Chapter 9)
    11·2 answers
  • Rank the following solutions in order of increasing acidity (least acidic to most acidic): I: [H3O+] = 1x10−5 II: [OH−] = 1x10−1
    13·1 answer
  • Whag is the answer. please i need help​
    6·1 answer
  • What is the volume of 2 mol of chlorine gas at STP?<br> 2.0 L<br> 11.2 L<br> 22.4 L<br> 44.8 L
    14·1 answer
  • A compound formed with potassium and bromine that can detect blood in a stain by reacting with it to form distinctive crystals
    6·1 answer
  • 2) Examine the molecules below.<br> Circle the molecules that can also be classified as compounds.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!