Question

Calculate the number of moles or gram molecules in 40g of H3PO4. Molecular mass of H3PO4 is
98gmoll.

​

Answer 1

Answer:

hope it helps..mark as brainliest

Answer 2

2.408× $10^{23}$ $H_{3}PO_{4}$ molecules.

To find the number of moles of $H_{3}PO_{4}$

$n_{H_{3}PO_{4}}$ = $\frac{40g}{98gmol^{-1} }$

$n_{H_{3}PO_{4}}$ = 0.40 mol

In one mole of molecules, there exist approximately $6.022$×$10^{22}$

1mol $H_{3}PO_{4}$×  $6.022$ × $10^{23}$

0.40mol$H_{3}PO_{4}$ × ?

0.40mol$H_{3}PO_{4}$ ×  $6.022$ ×$10^{23}$

= 2.408× $10^{23}$ $H_{3}PO_{4}$ molecules.

#SPJ2