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4. Solve problems :

A. What is the ratio of molecules in 1 mole of NH3 and 1 mole of HNO3 .

in Chapter 1: Some Basic Concepts of Chemistry by Expert (11.5k points)
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Correct answer is 1:1 

one mole of any substance,compound , or elements contain particles equal to avagadro's number i.e. 6.022\(\times 10^{23}\) 

\(\therefore \) 1 mole of NH3 =6.022\(\times 10^{23}\)  molecules of NH3

and 

1 mole of HNO3 =6.022\(\times 10^{23}\)  molecules of HNO3 

\(\therefore Ratio ={6.022\times 10^{23}\over 6.022\times 10^{23}}\) 

therefore , the ratio of molecules of NH3  and HNO3 is 1:1

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