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
arlik [135]
2 years ago
14

How many moles of H2O form when 4.5 moles O2 reacts?

Chemistry
1 answer:
mart [117]2 years ago
4 0

Explanation:

Start with a balanced equation.

2H2 + O2 → 2H2O

Assuming that H2 is in excess, multiply the given moles H2O by the mole ratio between O2 and H2O in the balanced equation so that moles H2O cancel.

5 mol H2O × (1 mol O2/2 mol H2O) = 2.5 mol O2

Answer: 2.5 mol O2 are needed to make 5 mol H2O, assuming H2 is in excess.

You might be interested in
Why does mecury hardly evaporate in room temperature
Crazy boy [7]
Because elemental mercury is a liquid at a room temperature
6 0
2 years ago
when carbon dioxide is bubbled through lime water the solution first turn milky and to colour less . Explain why these changes o
Annette [7]

Answer:

When excess of carbon dioxide is passed in lime water, calcium carbonate is converted to calcium bicarbonate which is soluble, hence the milkiness due to calcium carbonate disappears.

Explanation:

Ca(OH)2+CO2 → CaCO3 (Milkiness) ↓+H2O

CaCO3+H2O+CO2 → Ca(HCO3)2 (soluble)

5 0
2 years ago
Elements - made up of<br> Ex:
astra-53 [7]
All elements are made up of atoms. ➢ Atoms are made up of protons, neutrons, and electrons. Two different kinds of atoms can combine to form a compound. A molecule is a combination of atoms that cannot be broken apart while still retaining the same properties as the larger substance that it is a part of.
7 0
3 years ago
When three pairs of electrons are shared in a molecule, what shape will the molecule be?
djyliett [7]
The correct answer is B. The shape of a molecule where three pairs of electrons are shared is a trigonal planar. This is characterized by one central atom and three atoms forming an equilateral triangle which is bonded to the central atom.
8 0
2 years ago
Read 2 more answers
Which of the Atoms shown has an atomic number four
dimulka [17.4K]

Answer:

B

Explanation:

Atomic # = Protons

it says 4 p in the inside of the orbital

4 0
2 years ago
Other questions:
  • Solid sodium reacts violently with water, producing heat, hydrogen gas, and sodium hydroxide. How many molecules of hydrogen gas
    9·1 answer
  • How many atoms of hydrogen are represented by the formula below? 4H2SO4 A. 1 B. 4 C. 8 D. 28
    13·2 answers
  • Classify the compound below as an alkane, alkene, alkyne, alcohol, aldehyde, amine, and so forth
    13·1 answer
  • The attraction of like water molecules to each other is called _________.
    15·1 answer
  • Put the following names in the correct alphabetic indexing order:(1) Topper &amp; Casey Plumbing(2) KST Enterprises(3) Leland an
    12·2 answers
  • Which of the following is a example of an inherited behavior
    12·1 answer
  • The nursing student is studying drug dosing with liquids. The student knows that a specific amount of drug will be in a given vo
    6·1 answer
  • Consider a solution containing 0.100 M fluoride ions and 0.126 M hydrogen fluoride. The concentration of fluoride ions after the
    15·1 answer
  • Calculate the pOH of this solution. pH = 1.90 pOH =
    14·2 answers
  • Hello please please help me​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!