Answer:
Q1) How many molecules are present in the following quantities?
a) 1.5055 x 10²³ molecules.
b) 2.7099 x 10²¹ molecules.
Q2) How many moles are present in the following quantities?
a) 1.66 x 10⁻⁴ mol.
b) 1.66 x 10⁻¹⁵ mol.
Q3) What is the molar mass of each of the following substances?
a) 18.0 g/mol.
b) 40.0 g/mol.
c) 53.45 g/mol.
d) 98.0 g/mol.
e) 234 g/mol.
f) 239.2 g/mol.
Q4) Convert the following to moles.
a) 1.5 mol.
b) 0.058 mol.
c) 0.051 mol.
d) 0.042 mol.
Q5) Convert the following to grams.
a) 4.40 g.
b) 48.045 g.
c) 17.48 g.
d) 54.0 g.
Q6) How many molecules are present in the following masses?
a) 5.68 x 10²1 molecules.
b) 3.345 x 10²5 molecules.
Q7) Convert the following to grams.
a) 0.664 g.
b) 169.83 g.
c) 5.712 g.
Explanation:
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