The mole ratio of hydrogen molecules to sulfur atoms in the equation H2 + S = H2S is equal to: A) 2 to 1
B) 16 to 1
C) 1 to 32
D) 4 to 2
E) 1 to 1

Can someone me with questions 15 to 17 plz.

Draw a line graph showing the relationship between temperature in kelvin as a function of kinetic energy.

Quickly what are the following of organisms that existed over a wide area but only for a limited time period called a. soft fossils b. mold fossils c. index fossils d. trace fossils