Give at least two ways to know if a reaction is endothermic or exothermic

How would the concentration of HCl best be represented? (HCI) {HCI) [HCI]

What is 8 (6x+4) = -112

Why is it necessary to heat the unknown metal carbonate before dissolving it in water? (Gravimetric Analysis of a Carbon Kit)

When does phenolphthalein turn pink?

A chemist wants to uncover evidence that when molecules of a gas strike the wall of a container, energy is transferred from the molecules to the wall. Which might provide such evidence?

If a sealed syringe that contains some gas in heated in which direction will the syringe plunger move

Use the drop‑down menus to label the statements as either true of false. Dichloromethane is flammable. true false Methanol is flammable. Concentrated sulfuric acid is corrosive. 10% sodium carbonate solution must be used in the fume hood.

What is the process all rocks are continuously in during which that can change into other types of rocks

Collagen is made of fibers and is found in tendons and cartilage. Collagen contributes to meat toughness and is, therefore, an example of which type of protein?

1. Why does CH30 evaporate faster than water?