chemistry questions: sulfur?

Question

if you don't know the answers then don't say anything.

1: The Frasch process is used to mine
a)lead
b)potassium
c)sulfur
d)uranium

2: The most striking physical characteristic of hydrogen sulfide is its
a)color
b)density
c)odor
d)solubility in water

3: The formula for hydrosulfuric acid is
a)H2S
b)H2SO2
c)H2SO3
d)H2SO4

4: If the volume of sulfuric acid in an uncovered beaker increased gradually during a perios of several weeks, the increase was probably due to the absorption of
a)carbon dioxide
b)nitrogen
c)oxygen
d)water

5: The most stable form of sulfur at room temperatre is
a)amorphous
b)monoclinic
c)prismatic
d)rhombic

6: Sulfuric acid is used in the preparation of other acids because it
a)is an oxidizing agent
b)is dense
c)has a high boiling point
d)is a dehydrating agent

7: The acid contained in storage batteries is
a)acetic
b)hydrochloric
c)nitric
d)sulfuric

thanks.

Answer 1

1: c)
2: c) "rotten eggs"
3: a)
4: d)
5: b) or d) you'll have to look it up
6: c)
7: d

Answer 2

1.) sulfur, if you want to know details, look at the first two links I have posted below.

2.) Its odor, it smells terrible, like rotten eggs.

3.) a, H2S it's just aqueous hydrogen sulfide.

4.) I would guess water since H2SO4 is a great dehydrating agent.

5.) d, rhombic based on the phase diagram below

6.) d, look at the wiki article for question 4

7.) sulfuric acid

Answer 3

7. C 8. A 9. A 10. B 11. C 12. C 13. C 14.

Answer 4

1) C
2) C
3) A
4) D
5) D
6) D
7) D

Answer 5

b,c,c,a,a,a,d