Need urgent help please!! 1.Which is the independent variable

2.Which is the dependent variable.

Which formula equation represents the burning of sulfur to produce sulfur dioxide? s(s) + o2(g) 4502(9) 2h2s(s) + 302(g) —> 2h20(0) + 2502(9) 4fes2+1102 —> 2fe2o3 + 8502 2802(g) + o2(9) v205 , 2503(9)

What is the chemical formula for the compound formed between sodium and flour one

The point along a planet's orbit where it is closest to the sun is called the