Sagot :
Answer:
- 18.0 g/mol
- 180.2 g/mol
- 342.3 g/mol
- 98.1 g/mol
- 28.1 g/mol
Explanation:
_____________________________________________________
Ammonia
- Find Maaa Combination of the element
- In NH4 (contains 1 N, 4 H)
Element Mmass mass contribution
N 14.00 x 1 14.00
H 1 x 4 4.03
(add) 18.03 Molecular Mass of NH4
________________________________________________________
Glucose
C6H12O6
- Find Maaa Combination of the element
- In C6H12O6 (contains 6 C, 12 H, 6 O)
Element Mmass mass contribution
C 12.01 x 6 72.06
H 1 x 12 12.09
O 16.00 x 6 95.99
(add) 180.14 Molecular Mass of C6H12O6
______________________________________________________
Sucrose
C12H22O11
- Find Maaa Combination of the element
- In C12H22O11 (contains 6 C, 12 H, 11 O)
Element Mmass mass contribution
C 12.01 x 12 144.12
H 1 x 22 22.17
O 16.00 x 11 175.99
(add) 342.29 Molecular Mass of C12H22O11
_______________________________________________________
Sulfuric Acid
H2SO4
- Find Maaa Combination of the element
- In H2SO4 (contains 2 H, 1 S, 4 O)
Element Mmass mass contribution
H 1.00 x 2 2.01
S 32.06 x 1 32.06
O 16.00 x 4 63.99
(add) 98.07 Molecular Mass of H2SO4
________________________________________________________
Ethene
C2H4
- Find Maaa Combination of the element
- In C2H4 (contains 2 C, 4 H)
Element Mmass mass contribution
C 12.01 x 2 24.02
H 1 x 4 4.03
(add) 28.05 Molecular Mass of C2H4