Respuesta :

samueladesida43

Answer:

1. 0.214moles

2. 156g

Explanation:

1. Mole = Mass ÷ molar mass

Molar mass of N = 14g/lol

mole = 3/14

mole of N = 0.214mol

2. mole = mass ÷ molar mass

Molar mass of K = 39g/mol

4 = mass/39

mass = 39 × 4

mass = 156g.