Question

0.25moles of sodium hydroxide mass

Answer 1

Answer:

Gram molar masses of elements:

Sodium: 25g/mol

Hydrogen(molecule): 2g/mol

Oxygen (molecule): 32g/mol

Formula of sodium hydroxide : NaOH

Hence mass of 1 mole of NaOH is :

• 1 x 25+ 1 x 16 + 1 x 1 = 40g

Therefore the mass of 0.25 moles of NaOH : 0.25 x 40g = 10g