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Asked by rbhatt16 28th August 2018, 6:47 PM
Answered by Expert
Answer:
Given:
 
a = 600 pm
 
We space have comma

Density space of space unit space cell space straight rho space equals space fraction numerator zM over denominator straight a cubed straight N subscript straight A end fraction

Where comma

straight a space equals space unit space cell space length

straight N subscript straight A space equals Avogadro apostrophe straight s space number

straight M space equals space Molecular space weight space of space NaCl

Unit space cell space of space NaCl space has space 4 space Na to the power of plus space ions space and space 4 space Cl to the power of minus space ions

therefore space straight z equals 4

Total space mass space of space NaCl space equals space 58.5 space straight g divided by mol

therefore straight rho space equals space fraction numerator 4 cross times 58.5 over denominator open parentheses 600 cross times 10 to the power of negative 12 end exponent close parentheses cubed space cross times open parentheses 6.022 cross times 10 to the power of 23 close parentheses end fraction

space space space straight rho space space equals 1.8 cross times 10 to the power of 6 space straight g divided by straight m cubed
 
Denisty of sodium chloride is 1.8 × 106 g/m3 .
Answered by Expert 29th August 2018, 12:02 PM
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