Two hypothetical ionic compounds are discovered with the chemical formulas XCl2 and YCl2, where X and Y represent symbols of the imaginary elements. Chemical analysis of the two compounds reveals that 0.25 mol XCl2 has a mass of 100.0 g and 0.50 mol YCl2 has a mass of 125.0 g. (a) What are the molar masses of XCl2 and YCl2
Answers
Answer:
THE MOLAR MASS OF XCL2 IS 400 g/mol
THE MOLAR MASS OF YCL2 IS 250 g/mol.
Explanation:
We calculate the molar mass of XCL2 and YCL2 by bringing to mind the formula for molar mass when mass and amount or number of moles of the substance is given.
Number of moles = mass / molar mass
Molar mass = mass / number of moles.
For XCL2,
mass = 100 g
number of mole = 0.25 mol
So therefore, molar mass = mass / number of moles
Molar mass = 100 g / 0.25 mol
Molar mass = 400 g/mol.
For YCL2,
mass = 125 g
number of mole = 0.50 mol
Molar mass = 125 g / 0.50 mol
Molar mass = 250 g/mol.
So therefore, the molar mass of XCL2 and YCL2 IS 400 g/mol and 250 g/mol respectively.
Final answer:
The molar mass of XCl2 is 400 g/mol and the molar mass of YCl2 is 250 g/mol.
Explanation:
To find the molar masses of XCl2 and YCl2, we can use the relationship between molar mass, moles, and mass. The molar mass is calculated by dividing the mass of a compound by the number of moles.
For XCl2, we have 0.25 mol and 100.0 g. So, the molar mass of XCl2 is 100.0 g / 0.25 mol = 400 g/mol.
For YCl2, we have 0.50 mol and 125.0 g. So, the molar mass of YCl2 is 125.0 g / 0.50 mol = 250 g/mol.
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