As scientists search the universe for signs of life on other planets they are likely to focus on the presence of molecules containing which of the following elements?

A. carbon

B. calcium

C. iron

D. magnesium

What is the rate law for step 2 of this reaction? Express your answer in standard MasteringChemistry notation. For example, if the rate law is k[A][C]3 type k*[A]*[C]^3.

Oxygen has 53 atm and nitrogen has 94 atm what is total pressure?

Which element is more likely to dissociate into its monatomic form at 3000 K. H or N. Why?

What is temperature? A. A direct measure of external kinetic energy B. The same thing as heat energy C. An indirect measure of heat energy D. The amount of calories in a substance E. A direct measure of internal kinetic energy

What is the name of the compound? Sn (CO3) 2

What determines the horizontal arrangement of the periodic table?

A 55.3 g sample of lead heated and then quenched in a 175g sample of water. During the quenching reaction the temperature of the water increases from room temperature, 25.0 °C, to 42.6 °C.

What conclusion can you draw from this experiment about the components of the black ink

How does the size of ions affect the conductivity of a solution?

How to write complete ionic and net ionic equations?