Which of the following isotopes is most useful for dating plant and animal remains?

A. potassium - 40

B. Uranium - 238

C. Carbon-14

D. Lead-212

State why chemical equations are useful

List two problems of using nuclear energy with fission.

Which of the following is an nonmetal? A. He B. Re C. Cu D. Hg

What is the molarity of a 500.0 ml solution containing 0.75 moles of solute?

Write the equations that represent the first and second ionization steps for selenic acid (H2SeO4) in water. (Use H3O instead of H.) First ionization step: H2O (l) Second ionization step: H2O (l)

What is an oxidizing agent?

In times of hot dry weather some cities ban the use of garden sprinklers why do you think there is such a rule

What is the product of the chemical reaction ... Au+O2

Compare and contrast the compounds CH4 and PH3 in terms of covalent bonding, molecular geometry (shape), and intermolecular forces. Which substance would experience a stronger attraction between its molecules, and why?

How do consumers energy