Why some substances are not able to dissolve others?

Caclulate the pH for a solution with an [H+] = 9.75 x10-4

How do chemists express the rates of chemical reactions

What is the oxidation number of phosphorus (P) in phosphoric acid (H3PO4) ?

Aluminum reacts with hydrochloric acid to produce aluminum chloride and hydrogen gas. 2 al (s) + 6 hcl (aq) → 2 alcl3 (aq) + 3 h2 (g) what mass of h2 (g) is produced from the reaction of 1.35 g al (s) with excess hydrochloric acid?

Which phase transition of the 3 states of matter gains heat energy?

What is the mass number of an atom of 5 protons and 7 nuetrons

Okay so I'm trying to understand something for my CER. I did a lab on objects that have an equal mass but volume and density vary. Now I need to defend why the volume increased and the density decreased.

A flask contains 0.83mol of neon gas at a temperature of 35°C. The pressure gauge indicates 0.37atm inside the flask. What is the volume of the neon gas?

Which one is a true statement about endothermic reactions? A. Energy is absorbed making it feel colder. B. The reaction container always feels hot. C. The reactants have less heat energy than the products. D.

In which pair of elements are the chemical properties of the elements most similar?