Jawaban LKM KF Kelompok 4 :a. Massa A = mol A . massa molar A

= 0,17 mol . 55 gr/mol=9,35 gram

Massa B = mol B. massa molar B = 0,80 mol . 18 gr/mol = 14,40 gram

Massa total = 9,35 gram + 14,40 gram = 23,75 gram

Persen berat A = massa A

massa A+massa Bx100%

= 9,3523,75

x100%

= 39,37 %

Persen berat A = massa B

massa A+massa Bx100%

= 14,423,75

x100%

= 60,63 %