Question

please Answer these questions..​

Answer 1

$\huge\bold\red{4.Answer:-}$

$\red{M} \: = \frac{(v1 \times m1) +(v2 \times m2) }{v1 + v2}$

$\red{M} \: = \frac{(800ml \: \times 0.5mol/l) + (200ml \times 1mol/l)}{800ml + 200ml}$

$\huge\bold\red{= 0.6M}$

$\pink{hope \: its \: help \: you}$