31.0k views
4 votes
The molar mass of water (H2O) is 18.0 g/mol. A sample of water has a mass of 18.0 g. How many moles of water are contained in this sample? 1.00 18.0 36.0 324

User Elasticrat
by
8.1k points

1 Answer

5 votes

Answer: 1.00

Step-by-step explanation:

Given that,

Amount of moles of H2O (n) = ?

Mass of H2O in grams = 18.0g

For Molar mass of water H2O, use the molar masses:

Hydrogen, H = 1g;

Oxygen, O = 16g

H2O = (1g x 2) + 16g

= 18.0g/mol

Since, amount of moles = mass in grams / molar mass

n = 18.0g / 18.0g/mol

n = 1.00 mole

Thus, there are 1.00 mole of water are contained in this sample

User Sjas
by
8.3k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.