1.

Complete the table  Element/compoundMolecular Mass Mass in gramsGMM NO. of moleculesHydrogen H2Oxygen O2 2322818172g32g28g18g17g1GMM1GMM....1GMM.....6.022 1023H2molecules6.022 1023O2molecules6.022 1023H2Omolecules......... 1. What is the molecular mass of oxygen?2. How many GMM is present in 32g oxygen?3. How many molecules are present in it?4. How many GMM is present in 28 gm nitrogen?5. How many molecules are present in N2 ?6. How many GMM is present in 18 gm water?7. How many H2O molecules arf present in it?8. Calculate the number of GMM present in 96g oxygen?

Answer»
  Element/compoundMolecular Mass Mass in gramsGMM NO. of molecules
Hydrogen H2
Oxygen
O2

 
2
32
28
18
17
2g
32g
28g
18g
17g
1GMM
1GMM
1GMM
1GMM
1GMM
6.022 1023H2
6.022 1023O2
6.022 1023H2O
6.022 1023NH3

1. 32 g

2. 1 GMM

3. 6.022 x 1023 oxygen molecules

4. 1 GMM

5. 6.022 × 1023 N2 , molecules

6. 1 GMM

7. 6.022 × 1023 H2O Molecules

8. \(\frac{96}{32}\) = 3 GMM



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