20 Questions from past exams.
Practice for speed. Aim
for 1 minute per problem.
The bonding forces between
atoms in a molecule tend to minimize their:
heat capacity of one gram of water is 1.00 cal/°C at
What is it in
cal = 4.184 Joule)
Centigrade the temperature of a reaction at 500°F is
radius of a hydrogen atom is 0.529 × 10-8
cm. What is the diameter of the atom in pm?
is the area (cm2) of a rectangle whose sides
are measured to be 14.85 cm and 2.37cm?
is the total mass (kg) of three pieces of iron whose
individual masses were measured to be 10.146
kg, 4.25 kg, and 12568. g?
The mass percent of A in a
two-component mixture of A and B is 43.15%. What
is the mass of B in 75.23 g of the mixture?
for x taking into account significant figures:
(5.66128 - 2.5943)(x + 0.12) = (24.1137)(8.8136)
atom has a radius of 10-8 cm and
its nucleus has a radius of 10-13 cm.
If a model has a nuclear radius of 1. ft then the radius
of the model atom in miles (1 mi = 5280 ft) is
16-20 should help you become more familiar with your
scientific notation 242.08 is
3.414 (16.1846)2 taking into account
number is closest to 9.65
× 10-2 ?
× 10-5 - 8.35
Copyright D. Herrick