Question

Help me please!!!

Answer 1

Answer:

0.052L

Explanation:

Molarity of a substance, which refers to the molar concentration, is calculated as follows:

Molarity (M) = number of moles (mol) ÷ volume (L)

Mole = mass ÷ molar mass

Molar Mass of AgNO3 since Ag = 108, N = 14, O = 16

108 + 14 + 16(3)

= 108 + 14 + 48

= 170g/mol

Mole = 21.89 g ÷ 170g/mol

Mole = 0.129moles

Using Molarity (M) = number of moles (mol) ÷ volume (L)

Volume = number of moles ÷ molarity

V = 0.129 ÷ 2.50

V = 0.0516

To the correct significant figure i.e. 4s.f, the numerical value of volume = 0.052L