Answered On: 06/29/2020 04:18 PM Amount of CuO formed when 63.5 g of copper is heated strongly in air is:
s
63.5 g
69.5 g
73.5 g
79.5 g

Which of the following is a testable hypothesis? a. if i brush my teeth, i will get fewer cavities than if i don't brush my teeth. b. green toothpaste tastes better than blue toothpaste or red toothpaste. c. smart, careful, healthy people always brush their teeth. d. it's wrong to not brush your teeth before you have an important conversation with someone.

When hydrochloric acid reacts with potassium hydroxide solution, the following reaction occurs. hcl (aq) + koh (aq) h2o (l) + kcl (aq) the reaction gives off heat energy, so it is an reaction.

Which of the following are correct values for the ideal gas laws constant r