A 75.0-liter canister contains 15.82 moles of argon at a pressure of 546.8 kilopascals. what is the temperature of the canister?
1 answer:
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Answer
× 10²³ molecules are in 41.8 g of sulfuric acid
Explanation
The first step is to convert 41.8 g of sulfuric acid to moles by dividing the mass of sulfuric acid by its molar mass.
Molar mass of sulfuric acid, H₂SO₄ = 98.079 g/mol
Finally, convert the moles of sulfuric acid to molecules using Avogadro's number.
Conversion factor: 1 mole of any substance = 6.022 × 10²³ molecules.
Therefore, 0.426187053 moles of sulfuric acid is equal
Thus, 2.57 × 10²³ molecules are in 41.8 g of sulfuric acid.
Answer:
The empirical formula of the compound is .
Explanation:
We need to determine the empirical formula in its simplest form, where hydrogen () is scaled up to a mole, since it has the molar mass, and both carbon (
) and oxygen (
) are also scaled up in the same magnitude. The empirical formula is of the form:
Where ,
are the number of moles of the carbon and oxygen, respectively.
The scale factor (), no unit, is calculated by the following formula:
(1)
Where:
- Mass of hydrogen, in grams.
- Molar mass of hydrogen, in grams per mole.
If we know that and
, then the scale factor is:
The molar masses of carbon () and oxygen (
) are
and
, then, the respective numbers of moles are: (
,
,
)
Carbon
(2)
Oxygen
(3)
Hence, the empirical formula of the compound is .