A 25.0 g sample of a compound is found to contain 6.075 g carbon, 1.025 g hydrogen, and 17.9 g chlorine. Its molar mass is determined to be 99 g/mol. What is the molecular formula for this compound

C₂H₄Cl₂ or CH₃CHCl₂

Explanation:

The following data were obtained from the question:

Carbon (C) = 6.075 g

Hydrogen (H) = 1.025 g

Chlorine (Cl) = 17.9 g

Molar mass of compound = 99 g/mol.

Molecular formula for compound =.?

Next, we shall determine the empirical formula for the compound. This can be obtained as illustrated below:

C = 6.075 g

H = 1.025 g

Cl = 17.9 g

Divide by their molar mass

C = 6.075 / 12 = 0.506

H = 1.025 / 1 = 1.025

Cl = 17.9 /35.5 = 0.504

Divide by the smallest

C = 0.506 / 0.504 = 1

H = 1.025 / 0.504 = 2

Cl = 0.504 / 0.504 = 1

Therefore, the empirical formula for the compound is CH₂Cl.

Finally, we shall determine the molecular formula for the compound as follow:

[CH₂Cl]ₙ = 99

[12 + (2×1) + 35.5]n = 99

[12 + 2 + 35.5]n = 99

49.5n = 99

Divide both side by 49.5

n = 99/49.5

n = 2

Thus,

[CH₂Cl]ₙ => [CH₂Cl]₂ => C₂H₄Cl₂

the molecular formula for the compound C₂H₄Cl₂ or CH₃CHCl₂

where are the choice options?

the answer is yes

it has kinetic energy

reason

an object has kinetic energy when you stop the force carrying it, the object will stay in motion.

hope this contact me for more questions if you'd like: )