Which of these is a characteristic of weather?

A. Changes weekly

B. Changes gradually

C. Reported as a pattern over time

D. Reported as average conditions

Which type of semiconductor is created by doping with atoms that contain more valence electrons than the semiconductor material?

4. Which statement is true about the gravitational force? A. It only acts on objects that are in contact. B. It acts on all objects all of the time. C. It acts just on objects that are moving apart. D.

Ammonia and oxygen react to form nitrogen monoxide and water. Construct your own balanced equation to determine the amount of NO and H 2 O that would form when 2.19 mol N H 3 and 4.93 mol O 2 react.

Explain the difference (energetically) between the of melting and freezing of a substance?

Which of these substances is the least acidic? solution A, pOH = 1.5 solution B, pOH = 7.0 solution C, pOH = 13.5

Oxygen (O) will have chemical properties most like: sulfur (S). nitrogen (N). hydrogen (H). fluorine (F).

List the five major pollutants in the United States

What mass of MgCl2 was produced from 5.87 of Mg (OH) 2 reacting with 12.84 g of HCl? Identify the limiting and the excess reactants.

Use a Punnett square to predict the cross of a homozygous tall parent with a homozygous short parent, if tall is dominant over short. What will be the phenotype of the offspring described in this example. Select one: a. some tall some short b.

Write the mathematical expression that allows you to solve for the oh - concentration in water when you know only the h3o + concentration.