Calculate the mass percent of calcium in Ca (OH) 2?

Which of the following statements about the suns feature is true?

A mineral breaks into flat sheets when struck with a rock hammer. Which property of a mineral is being measured? A. streak B. cleavage C. hardness D. color

Justify why you can or cannot make a compound out of 6 hydrogen atoms and 2.5 carbon atoms.

Which of the following generalized equations best represents a combustion reaction? Question options: AB → A + B fuel + energy → oxygen A + oxygen → energy A + B → AB

What does a molarity of 0.5 M mean? A. 2 moles of solvent in 1 liter of solution B. 1 mole of solvent in 2 liters of solution C. 2 moles of solute in 1 liter of solution D. 2 moles of solute in 1 liter of solution

You run an experiment to test the effects of temperature on solubility. What would you heat? A.) solvent B.) solute C.) the room B.) the beaker

What happens when a firework is ignited?

The spines and thick wavy cuticle on a cactus are both what

What type of chemical process is used to create perfume?

Which of the following is a polyatomic ion? O A. HCI O B. Na O C. PO, O D. 52