What is the mass percentage of each element in the compound in SO2?

Answer 1

53.9 % Al

46.1 % O

if there is no mass of the compound, we can use Atomic Mass unit to replace it and assume the total is over 100.

base on Periodic Table, we can see Al= 26.9815 and O=15.9994 so we multiple Al with 2 and O with 3

then Al=53.963 and O=47.9982, total up Al and O equal to 101.9612 and we get 101.9612.

to get the percentage of Al,we need to divide Al over total up both of them, 53.963/101.9612 X 100 = 52.925% and O, 47.9982/101.9612 X 100 = 47.075%

Answer 2

Molar mass of AlPO3:

Al = 1 * 26.98 g = 26.98 g

P = 1 * 30.97 g = 30.97 g

O = 3 * 16.00 g = 48.00 g

Total = 105.95 g

% O by mass = grams O/grams AlPO3 * 100%

48.00 g/105.95 g * 100% = 45.30%

The percent of oxygen by mass in aluminum phosphite is about 45.3%.

Answer 3

The formula for aluminum oxide is Al2O3: Molar mass =581.77g/mol Al2O3.

In one mole Al2O3, there are two moles of Al3+ ions, therefore 2 moles Al3+ x 26.982g/mol Al3+ = 53.964g Al3+ in one mole of Al2O3.

GIVEN: mass of Al3+ = 53.964 g Al3+;Molar mass of Al2O3 = 581.77 g Al2O3

UNKNOWN: % Al3+

EQUATION:

% Al3+...=...g Al3+x 100...g Al2O3

% Al3+...=...53.964g Al3+x100......=...9.2758% Al3+581.77g Al2O3

Answer 4

Aluminium makes up 52.925%; oxygen accounts for 47.075%.

Answer 5

The molas mass of aluminium oxide is 2x27 + 3x16 = 102 g/mol.

Answer 6

O x 3.

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Answer 7

Sulfur: 49, 986 12 %

Oxygen: 50,013 88 %

Answer 8

101.96