AP Chemistry 1.1: Moles and Molar Mass

Practice AP Chemistry 1.1 questions on converting among mass, moles, molar mass, Avogadro’s number, and the number of particles.

Exam points

Convert between mass, moles, molar mass, particles, and electrons using dimensional analysis and Avogadro’s number.
Determine empirical or molecular formulas by converting measured masses to moles and comparing whole-number ratios.

Covered syllabus points

1.1.A—Calculate quantities of a substance or its relative number of particles using dimensional analysis and the mole…

[Maximum number: 1]

Answer the following questions related to manganese compounds.

Calculate the number of moles of Cl in the sample of $\mathrm{Mn}_{x} \mathrm{Cl}_{y}(s)$ remaining in the beaker.

For the correct calculated value, consistent with part (b):
$1.411 \mathrm{~g} \mathrm{Cl} \times \frac{1 \mathrm{~mol} \mathrm{Cl}}{35.45 \mathrm{~g} \mathrm{Cl}}=0.03980 \mathrm{~mol} \mathrm{Cl}$

1 point

All question bank results loaded

Covered syllabus points

1.1 Moles and Molar Mass question 1