A solution is prepared by dissolving 1.86g of kcl and 8.29g of k2co3 in enough water to make uo the final volume of 500 cm3. What is the concentration of the potassium ion in the solution?

How do chemists know that an oxygen molecule have unpaired electrons?

What form of energy is water flowing down a hill? * electrical O mechanical O nuclear O chemical

At a given temperature, 4.92 atm of Cl2 and 4.65 atm of Br2 are mixed and allowed to come to equilibrium. The equilibrium pressure of BrCl is found to be 1.597 atm. Calculate Kp for the reaction at this temperature. Cl2 (g) + Br2 (g) 2 BrCl (g).

What is the ph of a solution of 0.700 m kh2po4, potassium dihydrogen phosphate?

Which example best demonstrates the relationship between temperature and pressure? bubbles forming in dough when it is heated bubbles on a pizza popping when they are cut melting ice evaporating water

Which of the following is a measure of randomness in a system? A) entropy. B) kinetic energy. C) potential energy. D) chemical energy.

What substance can be broken down by chemical means? A) ammonia B) aluminum C) antimony D) argon (Castle learning question)

How the law of conservation of mass could be useful for investigating chemical changes

A covalent chemical bond is one in which outer-shell electrons of two atoms are shared so as to satisfactorily fill the outer electron shells of both atoms. protons and neutrons are shared by two atoms so as to satisfy the requirements of both atoms.

To break a chemical bond, energy must be (1) absorbed (2) destroyed (3) produced (4) released