Question

find the number of grams in 2.00mole of H2O​

Answer 1

Answer:

18×2=36 grams

Explanation:

hope it is helpfull for your question

Answer 2

Answer:

The number of grams in $2$ mol of $H_2O$ molecule is $36$ g·

Explanation:

We know that one mole of water molecule contains two moles of hydrogen atoms and one mole of the oxygen atom·

The mass of one mole of a hydrogen atom is $1$ g·

So,

The mass of two moles of hydrogen atoms are  $1$ g× $2$ g·

That is,

The mass of two moles of hydrogen atoms $=$ $2$ g

The mass of one mole of oxygen atom is $16$ g·

So,

One mole of water molecule weighs $=$ $2\ +\ 16$

That is,

 ⇒  $18$ g

Therefore,

One mole of water molecule weighs $18$ g·

Then,

Two moles of water molecule weighs $2$ ×  $18$·

That is,

 ⇒  $36$ g

Hence,

The number of grams in $2$ mol of $H_2O$ molecule is $36$ g·