Which property of iron is a physical property

A. Ability to burn

B. Ability to decompose

C. Ability to bond

D. Ability to conduct heat

Chemical reactions can be detected by changes in: a. temperature b. color c. overall mass of the products compared to the mass of the reactants d. density of the products compared to the reactants

A chemist dissolves 484. mg of pure perchloric acid in enough water to make up 240. mL of solution. Calculate the pH of the solution. Be sure your answer has the correct number of significant digits.

When is heat exchanged during the refrigeration cycle? During the initial condensation and final expansion of the refrigerant. During the initial expansion and final condensation of the refrigerant.

In which orbital does an electron in a copper atom experience the greatest effective nuclear charge?

How does an atom become a positively charged ion? A. by gaining one or more electrons B. by gaining one or more neutrons C. by losing one or more electrons D. by losing one or more neutrons

Which scientific law predicts that the mass of the reactants before a chemical reaction will equal the mass of the products after the reaction has taken place?

How does the magnitude of kp for the reaction 2hi (g) ⇋h2 (g) + i2 (g) change if the equilibrium is written 6hi (g) ⇋3h2 (g) + 3i2 (g) ?

Select the correct answer. Which of these elements is rarely found in organic molecules? A. hydrogen B. oxygen C. barium D. carbon

Can a solution with undissolved solute be supersaturated

What family is the mineral lead in?