. Find the formula unit mass of: (a) NaCl (b) FeO (c) NaHCO3 (d) CuSO4
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1)sodium chloride
2)ferrous/ferric oxide
3)sodium hydrochloride
4)copper sulphate
plz check the answer
2)ferrous/ferric oxide
3)sodium hydrochloride
4)copper sulphate
plz check the answer
priyansh01kp:
in this question mass is asked not chemical names. By the way name of NaHCO3 is sodium hydrogen carbonate not sodium hydrochloride
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Answer:
a)58.5g
b) 72g
c) 84g
d) 159g
Explanation:
a) atomic mass of Na: 23
atomic mass of Cl: 35.5
formula mass unit of NaCl: 23+35.5 =58.5g
b) atomic mass of Fe: 56
atomic mass of O: 16
formula mass unit of FeO: 56+16 =72g
c) atomic mass of Na: 23
atomic mass of H: 1
atomic mass of C:12
atomic mass of O3: 3×16
=48
formula mass unit of NaHCO3: 23+1+12+48 =84g
d) atomic mass of Cu: 63
atomic mass of S: 32
atomic mass of O4: 16×4
=64
formula mass unit of CuSO4 : 63+32+64 =159g
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