2.38 grams of uranium is heated in a current of air. The resulting oxide
weighs 2.806 grams. When solving for empirical formula, the simplest
molar ratio of uranium is 1.
TRUE or
FALSE

Explanation:

The empirical formula is the simplest whole-number ratio of atoms in a compound.

The ratio of atoms is the same as the ratio of moles.

So, our job is to calculate the molar ratio of U to O.

Data:

     Mass of U = 2.38   g

Mass of UₓOy = 2.806 g

Calculations

1. Calculate the mass of O

Mass of O = 2.806 g - 2.38 g = 0.426 g

2. Calculate the moles of each element

3. Calculate the molar ratio of the elements

Divide each number by the smallest number of moles

U:O = 1:2.663 = 3:7.988 ≈ 3:8

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colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock