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If The Molar Mass Of X(HCO3)2 Is 162 G Mol−1; Determine The Relative Atomic Mass Of X. [H = 1.0, C = 12.0, 0 = 16.0] - Erudites Academy

Categories: Chemistry WAEC

If the molar mass of X(HCO3)2 is 162 g mol−1; determine the relative atomic mass of X. [H = 1.0, C = 12.0, 0 = 16.0]

A. 40
B. 48
C. 61
D. 101

Correct Answer:

Option A = 40

Explanation

Molar mass of X(HCO3)2 = X+(1+12+(16*3))2=162
=X + (13+48)2=162
X + 122=162
X=162-122
X=40

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