Question

Tolong dijawab beserta caranya

Answer 1

4. Diket :
m = 3.5 gr
RTP = 24 L/mol
Ditanya :
V = ..?
Jawab :
1. Cari Mol
n = massa / Mr H2
n = 3,5 gr / 2
n = 1, 75 mol
2. Cari Volume
V = n × RTP
V = 1,75 mol × 24 L/mol
V = 42 L

5. Diket :
V = 200 mL
Jumlah molekul = 1,806 × 10^22
Ditanya :
M = .....?
Jawab :
1. Cari Mol
n = Jumlah Molekul / 6,02 × 10^23
n = 1,806 × 10^22 / 6,02 × 10^23
n = 0,3 × 10^-1
n = 0,03 mol
2. cari M , 200 mL = 0.2 L
M = n / V
M = 0.03 mol / 0.2 L
M = 0.15 M

6. Diket :
massa = 6 gr
Volume = 4,8 L
RTP = 24 L/ mol
Ditanya :
Mr = ...?
Jawab :
1. Cari Mol
n = volume / RTP
n = 4,8 L/ 24L / mol
n = 0.2 mol
2. Cari Mr
n = massa / Mr
0.2 mol = 6 gr / Mr
Mr = 6 gr / 0.2 mol
Mr = 30