chemistry help please :)?

Question

1) Which substance is a binary compound?
a) ammonia
b) argon
c) glucose
d) glycerol

2) How would the graph(the line)look like if it were to best represent the variation in the vapor pressure of water as temperature changes? (constant, inc., dec., etc...)

3) C3H8+5O2 (arrow to the right) 3CO2+4H2O
Which of these could be removed from the above reaction to increase the rate of reaction over time?
a) C3H8 & O2
b) C3H8 & CO2
c) O2 and CO2
d) CO2 and H2O

4) same as #3, but instead of removed, it's ADDED

5) Which process does random molecular motion explain?
a) How solids dissolve in liquids
b) how liquids evaporate
c) how solids melt
d) how precipitation forms

6) Sally adds a teaspoon of sugar to a cup of water. Over time the sugar dissolves and is distributed evely throughout the water. This occurs because of-
a) random molecular motion
b) uniform "
c) decreasing "
d) increasing "

7) How many hydroxide ions are needed to completely neutralize 1.0 L of 0.50 M HCl?
a) 1.5 x 10^23
b)

b) 3.0 x 10^23
c) 6.0 x 10^23
d) 12 x 10^23

8) A solution has a hydroxide ion concentratoin of 1 x 10^negative 5 M. What is the hydrogen ion concentration of the solution?
a) 1 x 10^-1( 10 to the negative one)
b) 1 x 10^-5
c) 1 x 10^-9
d) 1 x 10^-14

9) A solute is added to water and a portion of the solute remains undissolved. When equilibrium between the dissolved and undissolved solute is reached, the solution must be
a) dilute
b) saturated
c) unsaturated
d) supersaturated

10) Which of these is the best conductor of electricity?
a) distilled water
b) salt water
c) carbonated water
d) sugar water

11) What happens to molecules at 0k?
a) move rapidly and collide often
b) move rapidly and rarely collide
c) move slowly and "
d) stops moving

12) what is the lowest possible temp.?

13) What is the total # of atoms contained in a 1.00 mole sample of helium?
a) 1.00 atom
b) 2 "
c) 1.20 x 10^24
d) 6.02 x 10^23

14) As 14^C decays to 14^N, the # of protons in the nucleus
a) dec.
b) inc.
c) stays the same

Answer 1

1) ammonia = NH3 so it is binary
2) If temp is the only thing changing it should be a straight line increasing.
3) D, CO2 and H2O
4) B, the other 2 compounds
5) A
6) A
7) 0.5 moles of OH- ions are needed = 3.01 x 10^23