The phase change in which a substance changes from a solid to a liquid is

a. freezing.

b. melting.

c. sublimation.

d. condensation.

Enter the net ionic equation, including phases, for the reaction of AgNO3 (aq) with K2SO4 (aq). Solubility Rules are found here.

The average American uses 156 gallons of water every day. If you lived in Africa you would have to walk to collect this water and carry it home balanced on your head. It takes 3 hours to collect 5 gallons of water.

That does not have any global optimal solution but it does have at least one local optimal solution;

Which of the following best explains the polarity of water (H2O) ? OA. Since the oxygen atom has more electrons than the hydrogen atoms, it is negatively charged. ОВ.

Differences and similarities in a mixture and compound

Which statements describe Rutherford's model of the atom? Select all that apply.

When aluminum is placed in concentrated hydrochloric acid, hydrogen gas is produced. what volume of h2 is produced when 7.20 g of al reacts at stp?

Which is most likely the result of millions of metal atoms crowding together so that molecular orbitals become combined?

How is the Kyoto Protocol enforced A. By using carbon credits and debits B. By banning aerosols C. By banning CFCs D. By monitoring the ozone hole

What are all the elements to the left of the zigzag line in a periodic table called?