Question

Doar problemele 1-2-3-4

Answer 1

1. 44g CO2...........6,023*10^23 molecule
xg CO2................150*10^23 molecule

x=44*150/6,023=

2. 22,4L CO2........6,023*10^23 molecule
x L CO2................150*10^23 molecule


sau

pV=nRT=>n=pV/RT=1*75/0,082*273=3,35 moli CO2

1mol CO2......6,023*10^23 molecule
3,35 moli CO2.......x molecule

3. n=V/Vm=75/22,4=3,348 moli NH3

1 mol NH3......6,023*10^23 molecule
3,348 moli........x= 20,166*10^23 molecule

4. MNH3=17g/mol

n=m/M=>m=17*3,348=56,919g NH3