hat is the number of nitrogen molecules in 7g of nitrogen gas.

1.	hat is the number of nitrogen molecules in 7g of nitrogen gas.
Answer» In 1 mole of nitrogen, we have 6.02210^23 atoms of it. Now, if we find out how many moles of nitogen are there in 7 gm, we can calculate atoms easily. So, atomic weight of nitrogen is 14 u.. We have formula, mole = given weight/atomic mass x= 7/14 x=0.5 moles Now, 1 mole of nitrogen =6.02210^23 atoms 0.5 moles of nitrogen =6.02210^23/10.5 =>3.011*10^23atoms….

Answer»

In 1 mole of nitrogen, we have 6.022*10^23 atoms of it.

Now, if we find out how many moles of nitogen are there in 7 gm, we can calculate atoms easily.

So, atomic weight of nitrogen is 14 u..

We have formula,

mole = given weight/atomic mass

x= 7/14

x=0.5 moles

Now, 1 mole of nitrogen =6.022*10^23 atoms

0.5 moles of nitrogen =6.022*10^23/1*0.5

=>3.011*10^23atoms….

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