Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
0 votes

What is the mass of $3.01\times 10^{22}$ molecules of ammonia?


Can you answer this question?

1 Answer

0 votes
Gram-molecular mass of ammonia=17g
Number of molecules in 17g(one mole) of $NH_3$
$\Rightarrow 6.02\times 10^{23}$
Let the mass of 3.01$\times 10^{22}$ molecules of $NH_3$ be =xg
$\large\frac{3.01\times 10^{22}}{6.03\times 10^{23}}=\frac{x}{17}$
$x=\large\frac{17\times 3.01\times 10^{22}}{6.02\times 10^{23}}$
$\Rightarrow 0.85g$
Hence (b) is the correct answer.
answered Oct 22, 2013 by sreemathi.v

Related questions

Ask Question
student study plans
JEE MAIN, CBSE, NEET Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App