Period 4 of the periodic table contains the elements potassium, calcium, and copper. Which is the least reactive?

What affects the rates of reactions? describe each. a. b.?

During an experiment, ice and water were placed in a perfectly insulated thermos flask at 0 °C. Describe this system when it phase reaches equilibrium.

I am in the 12th grade. I need project ideas that deal with the environment (rocks, weather, soil, etc)

1. How many moles are there in 2.75 x 10^24 atoms of carbon?

What is the volume of 193 g of gold

What is the name of a binary compound made up of lithium and chlorine?

A scientist in London and a scientist in California both conducted independent investigations that produced similar results.

When magnesium combines with oxygen, the reaction involves a. a conversion of protons into electrons. b. sharing of electrons between Mg and O. c. transfer of electrons from Mg to O. d. transfer of electrons from O to Mg.

The activation energy for the reaction no2 (g) + co (g) ⟶no (g) + co2 (g) is ea = 100 kj/mol and the change in enthalpy for the reaction is δh = - 375 kj/mol.

What process transform solar energy into chemical energy?