Question

answer thise questions​

Answer 1

Answer:

A. NH³ -> 14 +3×1 =17

B. a) O² : 16×2=32

32 g O² = 1 mol O²

12 g O²= 12/32 mol O²= 0.375 mol O²

b) H²O : 1×2+16 =18

18 g H²O = 1 mol H²O

20 g H² O = 20/18 mol H²O = 1.11 mol H²O

Answer 2

$\red{answer}$

$\red {A. } \: no.of \: mole \: = {\frac { given \: mass }{molar \: mass}} \\ = {\frac {12}{32}} \\ \: = 0.375$

$\green{B.} \: no. \: of \: mole \: = { \frac {given \: mass}{molar \: mass}} \\ = { \frac{20}{18}} \\ = 1.11$