Question

Write the formula unit mass of(NH4)2 SO4(given atomic mass: N is 14u,H is1u,S is32u,O is16u

Answer 1

(14+4×1)×2+32+16×4 = 18×2+32+64=132

Answer 2

Hello!

Write the formula unit mass of (NH4)2 SO4 (given atomic mass: N is 14u, H is 1u, S is 32u, O is 16u

Solving:

N = 2*(14u) = 28 u

H = 2*(4*1u) = 2*(4u) = 8u

S = 1*(32u) = 32 u

O = 4*(16u) = 64 u

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(NH4)2 SO4 = 28u + 8u + 32u + 64u

(NH4)2 SO4 = 132 u

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