Saved Bookmarks
| 1. |
Example 48. From 6.02 x 1022 molecules of N2 presentin a container, 700 mg of N2 are removed. What is the amountof H2 (in g) required to convert the remaining N2 into NH3 ?caliasco 1023 |
|
Answer» Answer: Answer:- Molar mass of CO 2
= 44g Given mass = 200 mg = 0.2g Number of MOLES = 44 0.2
= 220 1
Number of moles= Avogadro’s number number of MOLECULES
⇒Number of molecules=Avogadro’s number×number of moles ⇒No. of molecules=6.022×10 23 × 220 1
=2.73×10 Molecules in 220 1
moles As 10 21 molecules are removed, ∴ No. of molecules left = 2.73×10 21 −10 21 =1.73×10 21
∴ No. of moles= Avogadro’s number No. of molecules
= 6.23×10 23
1.73×10 21
=2.88×10 −3 |
|