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Write the formulae for the following and calculate the molecular mass for each one of them.

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asked Nov 6, 2017 in Chemistry by jisu zahaan (28,760 points) ● 28 ● 435 ● 1067

Write the formulae for the following and calculate the molecular mass for each one of them. 

(a) Caustic potash 

(b) Baking powder 

(c) Lime stone 

(d) Caustic soda 

(e) Ethanol 

(f) Common salt

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answered Nov 6, 2017 by sforrest072 (157,439 points) ● 63 ● 448 ● 1256

(a) KOH 

(39 +16+1) = 56 g mol–1 

(b) NaHCO3 

23 + 1 + 12 + (3 × 16) = 84 g mol–1 

(c) CaCO3 

40 + 12 + (3 × 16) = 100 g mol–1 

(d) NaOH 

23+16+1 = 40 g mol–1

(e) C2H5OH = C2 H6 O 

2 × 12 + (6 × 1) + 16 = 46 g mol–1 

(f) NaCl 

23 + 35.5 = 58.5 g mol–1 

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