What are covalent compounds composed of?

A. a metal and a metal

B. a metal and a non metal

C. a nonmetal and a nonmetal

D. an alkali metal and a nonmetal

What part of speech is heat

Boron has an atomic mass of 10.811. What does this mean?

When electricity passes through a gas it may become hot enough to give off light how could scientist determine the element from which gas is made

A scientist is sitting in her living room and hears the wind rushing past her front door. Based on her knowledge of Bernoulli's principle, what does the scientist know even without opening the door?

Define alkanes and give examples

Sodium chloride is stirred into water to form a solution. in this case, what are sodium chloride and the water?

What can form as a result of a chemical reaction?

A solution of orange juice that weighs 500 g contains liquid juice and solid pulp. All of the pulp is removed from the juice. The pulp is found to weigh 50 g. How much would the remaining liquid juice weigh? A. 50 g B. 250 g C. 450 g D. 500 g

Assume 3 molecules of Fe react according to the following equation. 3Fe + 4H2O Fe3O4 + 4H2 How many molecules of H2 are produced? How many water molecules are required? What is the mole ratio of Fe to H2O?

10.0 mL of a HF solution was titrated with a 0.120 N solution of KOH; 29.6 mL of KOH were required to completely neutralize the HF. Calculate the normality of the HF solution.