Question

Calculate the mass of 6.022*10 to the power 23 molecules of nh4cl

Answer 1

Answer:

53.5g

Explanation:

nh4cl has molar mass of 53.5f/mol

6.02×10²³ nh4cl molecule =1mol nh4cl molecule

mole=mass/molar mass

1=mass/53.5

mass=53.5×1=53.5g oh nh4cl

Answer 2

Answer: M = 54.5 g.

Explanation:

Number of molecules = 6.022 × 10^23

No. of moles = 1 mol

Molar mass of ammonium chloride = (14 g + 4 g + 35.5 g) = 54.5 g

∵ Mass = Molar mass · No. of moles

=> M = 54.5 g mol^-1 × 1 mol

=> M = 54.5 g

More:

• Molarity = (No. of moles of solute)/(Volume of solution)
• Molality = (No. of moles of solute)/(Mass of solvent)
• Mole fraction = (No. of moles of solute)/(No. of moles of solvent).
• Number of molecules = (No. of moles)(Avogadro constant) = (Given mass)/(Molar mass) N_A.