Question

Tolong dibantu. Terima kasih.

Answer 1

Mr H2 2g/mol
Δm1= (massa botol + gas H2 )- massa botol
= (15,95-15,85)g= 0,1 g

jd acuannya 0,1 g= 2g/mol
0,05g= 1g/mol

Δm2= (massa botol+ gas y)- massa botol
=(17,45 - 15,85)g
=1,6 g

mr gas y=1,6 g gas Y /0,05 g× 1g/mol
=32 g/mol

Answer 2

Massa H₂ = 15,95 - 15,85 = 0,1 gram
Mr H₂ = 2 gr/mol

massa Y = 17,45 - 15,85 = 1,6 gram
Mr Y = ... ?

n H₂ = n Y
0,1 / 2 = 1,6 / MR Y
0,05 = 1,6 / MR Y
MR Y = 32 g/mol (C)