Can someone help me with these 7 questions?

Question

Which of the following equations is a single replacement reaction?
C(s)+O2(g)CO2(g)
Fe(s)+H2S(g)-> FeS(s)+H2(g)
8Fe(s)+S8(s)-> 8FeS(s)
Nacl(aq)+AgNO3(aq)-> AgCl(s)+NaNO3(aq)

Which of the following equations is a double replacement reaction?
C(s)+O2(g)->CO2(g)
Fe(s)+H2S(g)-> FeS(s)+H2(g)
8Fe(s)+S8(s)->8FeS(s)
Nacl(aq)+AgNO3(aq)-> AgCl(s)+NaNO3(aq)

Balance the following equation:
NH3+O2->NO2+H2O

5,400 moles of P4010 has a mass of:

52.57 g.
1599982 g.
106965425 g.
1532412 g.

When doing a stoichiometry problem, all of the following could be used to solve the problem except:

conversion equalities.
mole ratios.
temperature.
molar masses.


Calculate the mass of 4.56 moles of helium.

15g helium
18.25g helium
7.68g helium
9.12g helium
4.003g helium


Calculate the number of atoms in 12g of zinc.

1.0 x 1024 atoms
1.1 x 1022 atoms
1.1 x 1023 atoms
0.9 x 1021 atoms
1.2 x 1023 atoms

I only need these two b/c I did the others.Can you also tell me if these are correct:
When doing a stoichiometry problem, all of the following could be used to solve the problem except : temperature
Calculate the mass of 4.56 moles of helium. 18.25g helium
Calculate the number of atoms in 12g of zinc: 1.1 x 1023 atoms

These are the two I still need help with so please help me!

Balance the following equation:
NH3+O2->NO2+H2O

5,400 moles of P4010 has a mass of:
52.57 g.
1599982 g.
106965425 g.
1532412 g.

Answer 1

single replacement reaction:
Fe(s)+H2S(g)-> FeS(s)+H2(g)

double replacement reaction:
Nacl(aq)+AgNO3(aq)-> AgCl(s)+NaNO3(aq)

4NH3+5O2->4NO2+6H2O

1599982 g

temperature.

18.25g helium

~1.1 x 1023 atoms

Answer 2

a million. prominent form of chocolate: White, medium, or dark? Medium 2.What' your prominent music on the 2d? Dont understand... 3.What color is your hair now? what's it initially? Now its blonde it replaced into Brown 4.Fill in the sparkling: I kissed a _____ and that i enjoyed it Your mom 5.what's one notice that describes you? candy 6.Is your T.V. On or off? If on, what's on? Off 7. what's your eye color? Blue/green

Answer 3

Too lazy to do your own homework?