Is it hard to push two protons tightly together? why? (think about charge)

The solubility of barium nitrate is 9.02 g/100 g h2o at 20°c. a 15.2 g sample of barium nitrate is added to 200.0 g of water at 20°c. is the solution saturated, unsaturated, or supersaturated? a. unsaturated b. saturated c. supersaturated

What is the source of continuous heat and energy that we receive from the sun

Describe the properties of sodium, chlorine, and sodium chloride