Wondering if anyone could help me out. I am having a very rough time in G CHEM

1. Which of the following 0.15m aqueous solitions has the lowest freezing point?

A. KCL

B. AL2(SO4)3

C. CH3OH

D. C2H5OH

E. NAOH

The answer is B...anyone know why?

2. The number of electrons that can have the quantum number n=4, 1=2 in a certain atom is

A. 2

B. 4

C. 6

D. 10

E. 32

The answer is D??? I thought it was E? can somene explain?

3. Mg reacts with a certain element to form a compound with the general formula MgX. What would the most likely formula be for the compound formed between potassium and element X?

A. K2X

B. KX2

C. K2X3

D. K3X2

E.KX

The answer is A......??????? Anyone?

4. Which gives the most basic solution when dissolved in water?

A. H3PO4

B. NaH2PO4

C. P2O5

D. N2NO3

E. P2O5Na3PO4

The answer is E...????

And Sorry...one more...

5. How many liters of 5.0 molar ethyl alcohol can be prepared by dissolving 460 grams of ethyl alcohol in water?

A. 0.5

B. 10

C. 2.0

D. 50

E. 5.0

The answer is A....

Ok sorry for asking so many ?s...I am just a nervous wreck because my test is in less than two weeks..

Thanks

BEAGLE