The measure of the distance an object travels in a certain length of time is the object's A) direction. B) energy. C) position. D) speed.

Write the balanced molecular equation for the reaction of hydrochloric acid with calcium hydroxide. What is the sum of the coefficients?

Krypton-79 has a half-life of 35 hours. how many half-lives have passed after 105 hours?

Which conclusion could be made from Ernest Rutherford's gold foil experiment? a. Atoms are made up of mostly empty space. b. Atoms are mainly solid and block alpha particles. c. The volume of the nucleus is large compared to the rest of the atom. d.

How many water molecules or particles are in 5.5 moles of water.

How many photons are produced in a laser pulse of 0.497 J at 469 nm?

How does an atom with too few neutrons relative to protons undergo radioactive decay? * by converting proton to a neutron by converting a neutron to a proton by emitting an alpha particle

What is the chemical formula for the compound formed between sodium and iodine?

8. Write a balanced chemical equation showing how you could prepare each of the following salts from an acid-base reaction: KNO3, NaBr, and Cas.

Is calcium carbonate a compound element or mixture?

Why do covalent bonds not involve the transfer of electrons