Given the unbalanced equation: Al + O2 → Al2O3

When this equation is completely balanced using smallest whole numbers, what is the sum of the coefficients?

1.

9

2.

7

3.

5

4.

4

What is the name of KMnO3?

Is this equation balanced and in the lowest form? 4NH3 → 2N2 + 6H2 Yes, because there are equal amounts of atoms of each element on both sides. No, because the coefficients could be reduced to 2,1, and 3.

The Gay-Lussac law of gases describes the relationship between

Calculate the volume (in mL) of a 2.75 M solution that must be used to make 1.25L of a 0.150 M solution. M1V1 = M2V2 solve for V1 (the answer will be in the units of L), convert L to mL

Match the following to the right answer: Centi- Deka- kilo- milli- hecto- deci- 1/100 1/10 1/1000 10 100 1000

An atom of oxygen (atomic number 8) with an atomic mass of 16 would have how many neutrons?

Chlorophyll reflects which of these colors? a. red b. blue c. green d. yellow

Extracting oil from shale deposits a has been initiated on a large scale in the United States and will soon surpass Canada's production. b involves removing and refining waxy hydrocarbons called kerogen.

Which shows the levels of organization within an ecosystem from largest to smallest?

the physical properties of 10 grams of iron are the same as the ___ properties of 20 grams of iron a) reactive b) physical c) chemical