Which of the following could be classified as solutions? a. aluminum
b. carbon dioxide
c. pencil
d. gasoline
e. raisin bread
:f. tap water
g. mercury
h. air

b. carbon dioxide

d. gasoline

h. air( a gaseous solution )

g. mercury

tap water is a solution of small amounts of several substances in water.

Explanation: a solution is a special type of homogeneous mixture composed of two or more substances. In such a mixture, a solute is a substance dissolved in another substance, known as a solvent.

most likely he is cheating on you

1. 1 mole of anything contains 6.022x10^23 pieces  

d  

2. a  

3. c, number  

5. 1.24x10^24atoms / 6.022x10^23atoms/mole = 2moles h2 atoms  

6. fe2br3 mass = 2moles x mass fe + 3 moles x mass br  

molar mass = grams / number of moles = g/mole  

to find moles = g / molar mass  

to find mass = g = molar mass / moles