Question

What is the formula unit mass of potassium sulphate and amonium chloride plz

Answer 1

potassium sulphate (k2so4).
k(39 mass)
s(32mass)
o(16mass)
39*2+32+16*4=174g
ammonium chloride (NH4cl)
N(14mass)
H(1mass)
cl(35.5mass)
14+1*4+35.5=53.5g

Answer 2

Formula mass of $K_2SO_4$ and  $NH_4Cl$  are 174 g and 53.5 g

Explanation:

Formula mass is defined as the mass in grams of 1 formula unit of a substance.

S.I Unit of Molar mass is gram per mole and it is represented as g/mol.

Atomic Mass of Potassium (K) = 39 g

Atomic Mass of Chlorine (S) = 32 g

Atomic Mass of Oxygen (O) = 16 g

Atomic Mass of  Nitrogen (N) = 14 g

Atomic Mass of  Chlorine (Cl) = 35.5 g

The formula unit of potassium sulphate and ammonium chloride are $K_2SO_4$ and $NH_4Cl$.

Formula mass of $K_2SO_4$ = 39(2)+1(32)+4(16) g = 174 g

Formula mass of $NH_4Cl$ = 14(1)+1(4)+35.5(1) g = 53.5 g

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