A small cup of water is left out on the counter. Three days later, the water is gone. Which phase change describes what has occurred?

Melting

Sublimation

Evaporation

Condensation

You have a glass of liquid and combine it with a mysterious solid and notice that over time the color changes.

If the volume and temperature are kept constant, and nothing is added to the reaction mixture, what happens to the total pressure during the course of the reaction?

What is the root mean square of CO2 at 27oc

Which of the following is a possible definition of a base? A. A substance that increases the concentration of hydronium ions in a solution B. A compound that is a hydrogen ion acceptor in an acid-base reaction C.

How many grams are in 5 lbs

45 2.0 2. How many joules of heat are needed to raise the temperature of 048 kg of aluminum from 21°C to 94°C, if the specific heat of aluminum is 900 J/g °C?

Predict the reactants of this chemical reaction. That is, fill in the left side of the chemical equation. Note: you are writing the molecular, and not the net ionic equation. → CaCl2 (aq) + H20 (l)

How does the momentum of a dog and a horse, which are both running at the same velocity, compare?

Subject 22. Where do you find the electrons in an atom? a. In the nucleus b. Travelling around the nucleus C. In the protons d. Travelling in the protons

What is the main difference between rocks and minerals