1.Dalam 2 mol Nacl terdapat atom Na sebanyak..................? 2. Sebanyak X gram gas nitrogen diukur pada suhu O° C dan tekanan 1 atm mempunyai volume 56 liter,maka X adalah.............? 3. Jika 2,4 X 10²³ molekul X₂ massanya atom relatif X adalah.............?
fahmifahreza02
No 1. mol x 6,02 x 10²³ = 2 x 6,02 x 10²³ 12,04 x 10²³ atom
No 2. N₂ = 28 Jawab = Massa = 56/22,4 = 2,5 Mr = m/mr n² = 2,5/28 = 70
No 3. Mol = Jumlah molekul/6,02 x 10²³ = 2,4 x 10²³/6,02 x 10²³ = 2,4/6,02 = 0.4 Mol
= 2 x 6,02 x 10²³
12,04 x 10²³ atom
No 2. N₂ = 28
Jawab = Massa = 56/22,4 = 2,5
Mr = m/mr n² = 2,5/28 = 70
No 3. Mol = Jumlah molekul/6,02 x 10²³
= 2,4 x 10²³/6,02 x 10²³
= 2,4/6,02
= 0.4 Mol
Massa = Mol x Mr
Mr = Massa/Mol
= 60/0,4
= 150