Question

how much atoms will 9.01g of H2o have?​

Answer 1

Explanation:

How many molecules are present in 9g of water?

1 mole of water weighs 18 g

Therefore 0.5 mole of water weighs 9 g

According to Avagadro,

1 mol = 6.023 **10^23

atoms

So,

0.5 mol = 3.0115 **10^23

molecules of water

Each water molecule contains 2 hydrogen atoms .

Therefore

2** 3.00115**10^23

atoms of hydrogen are present in 9g of water

Answer:

The answer is (a)

6.02⋅1023

Explanation:

So, you know that your sample of glass contains

9 g

of water.

Use water's molar mass to find how many moles of water you get in your glass sample.

9g⋅1 mole water18.02g=0.4994 moles water

Answer 2

Answer:

0.4990....................