16. Leo has 279 comic books in his collection. He puts 34 comic books in each box. About how many boxes of comic books does Leo have?

A 6

B 11

C 9

D 5

How many atoms of hydrogen-1 are in a 1.007-g sample?

How many lone pairs are on the central atom in bcl3? express your answer numerically as an integer?

Which atom in the ground state has a partially filled second electron shell? hydrogen atom lithium atom potassium atom sodium atom

A gas is originally at a temperature of 23.13 degrees C. What temperature must it be heated to triple its volume with constant pressure?

How many moles are there in a 1.40 kg bottle of water?

The uranium used for nuclear fuel exists in nature in several minerals. Calculate how many moles of uranium are in 8.00 moles of the following: 1. carnotite, K2 (UO2) 2 (VO4) 2 • 3H2O 2. uranophane, CaU2Si2O11 • 7H2O 3.

What is the chemical formula of a compound that is composed of the ions Ca2 + and br-

What element is likely to form an ionic compound with chlorine?

Will a parachute slow a skydiver more at a very high altitude or a lower altitude?

Carbon monoxide is: Only found in large cities An odorless, colorless, toxic gas Healthy to breath in A danger when driving on the open highway