A runner eats a snack with 375 Calories of nutritional energy. After her snack, she uses 3.16 × 106 joules while running [1 Calorie = 4184 joules].

Which of the following statements are true? Select all that apply.

Can someone me with questions 12 and 13 plz.

If 1.8 l of water is added to 2.5l of a 7.0 m koh solution, what is the molarity of the new solution

Achemist 16 drop copper metal from copper chloride solution. the chemist place is 0.50 g of aluminum foil in a solution containing 0.75 g of copper (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction?