प्र.15 निम्नलिखित पदार्थों के मोलर द्रव्यमान का परिकलन कीजिये-
(a) एथाइन (CH
(b) सल्फर अणु (Sa)
(c) हाइड्रोक्लोरिक अमल (HCI)
(d) नाइट्रिक अम्ल (HNO)
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Answer:
(a) Ethyne (C2H2) = 2×Mass of C atom+2×Mass of H atom=2×12+2×1=24+2=26 g/mol
(b) Sulphur dioxide (S8)=8×Mass of sulphur atom=8×32=256 g/mol
(c) P4=4×Mass of P atom=4×31=124 g/mol
(d) HCl=1×Mass of H atom+1×Mass of Cl atom=1+35.5=36.5 g/mol
(e) HNO3=1×Mass of H atom+1×Mass of N atom+3×Mass of O atom
=1×1+1×14+3×16=63 g/mol
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