Diketahui massa atom relatif (Ar) H=1; C=12; N=14;...

Question

Diketahui massa atom relatif (Ar) H=1; C=12; N=14; O=16; dan S=32
Tentukan Mr dari: 
a.	H2C2O4.2H2O
b.  HNO3

M Z · Accepted Answer

b. Mr HNO3 = 1 Ar H + 1 Ar N + 3 Ar O
Mr HNO3 = 1(1) + 1(14) + 3(16)
Mr HNO3 = 1 + 14 + 48
Mr HNO3 = 63

M Z · Accepted Answer

a. Mr H2C2O4 = 2 Ar H + 2 Ar C + 4 Ar O
Mr H2C2O4 = 2(1) + 2(12) + 4(16)
Mr H2C2O4 = 2 + 24 + 64
Mr H2C2O4 = 90

Mr 2H2O = 4 Ar H + 2 Ar O 
Mr 2H2O = 4(1) + 2(16)
Mr 2H2O = 4 + 32
Mr 2H2O = 36

Mr H2C2O4•2H2O = Mr H2C2O4 + Mr 2H2O
Mr H2C2O4•2H2O = 90 + 36
Mr H2C2O4•2H2O = 126

Pemula P · Accepted Answer

Mr HNO3 = Ar H + Ar N + 3 • Ar O
Mr HNO3 = 1 + 14 + 3• 48
Mr HNO3 = 15 + 48
Mr HNO3 = 63 gram/mol

Pemula P · Accepted Answer

Mr H2C2O4 = 2 • Ar H + 2 • Ar C + 4 • Ar O
Mr H2C2O4 = 2 • 1+ 2 • 12 + 4 • 16
Mr H2C2O4 = 2 + 24 + 64
Mr H2C2O4 = 90

Mr 2H2O = 4 • Ar H + 2 • Ar O
Mr 2H2O = 4 • 1 + 2 • 16
Mr 2H2O = 4 + 32
Mr 2H2O = 36

Mr H2C2O4 • 2H2O = Mr H2C2O4 + Mr 2H2O
Mr H2C2O4 • 2H2O = 90 + 36
Mr H2C2O4 • 2H2O = 126

Ryan A · Answer

Hitung volum pada keadaan STP dari 
A 0,25 mol SO2
B 5gram gas NO
C 44,8 liter gas H2

Diketahui massa atom relatif (Ar) H=1; C=12; N=14; O=16; dan S=32 Tentukan Mr dari: a. H2C2O4.2H2O b. HNO3