Question

Calcula la masa molecular de las siguientes sustancias:
 HgO
 CaCO 3
 H 3 PO 4
 KMnO 4
 NaNO 2
 Ca 3 (PO 4 ) 2
 FeCl 3
 Mg(NO 3 ) 2
 Al(OH) 3
 CO 2

Answer 1

Respuesta:

HgO

Hg = 200

O = 16

200 + 16 = 216 g / mol HgO

CaCO3

Ca = 40

Co = 59 × 3 = 177

40 + 177 = 217 g/mol CaCO3

H3PO4

H = 3

P = 31

O = 16 × 4 = 64

3 + 31 + 64 = 98 g / mol H3PO4

KMnO4

K = 39

Mn = 56

O = 16 × 4 = 64

39 + 56 + 64 = 159 g/mol KMnO4

NaNO2

Na = 23

N = 14

O = 16 × 2 = 32

23 + 14 + 32 = 69 g / mol NaNO2

Ca3(PO4)2

Ca = 40 × 3 = 120

P = 31 × 2 = 62

O = 16 × 8 = 128

120 + 62 + 128 = 310 g/ mol Ca3(PO4)2

FeCl3

Fe = 56

Cl = 35 × 3 = 105

56 + 105 = 161g/mol FeCl3

Mg(NO3)2

Mg = 24

N = 14 × 2 = 28

O = 16 × 6 = 96

24 + 28 + 96 = 148 g/mol Mg(NO3)2

Al(OH)3

Al = 27

O = 16 × 3 = 48

H = 3

27 + 3 = 48 = 78 g/mol Al(OH)3

CO2

C = 12

O = 16 × 2 = 32

12 + 32 = 44g/mol CO2