An atom is described as a nucleus of protons and neutrons surrounded by a (n)

A) protons.

B) neutron cloud.

C) electron cloud.

D) negative force.

Consider the lewis structures for the compound so3 and the polyatomic ions so32 - and so42-. which of these must exist as a set of resonance structures?

If J. J. Thomson were alive today, which dessert might he use to describe his atomic model? Chocolate chip cookie Vanilla cupcake Blueberry pie Ice cream sandwich

An atom of gold (Au) has 79 electrons. How many protons must it have if it has a net charge of 0?

Which structural formula correctly represents an organic compound

In the gravimetric method, why is the reaction solution tested with litmus paper?

The energy needed to get a reaction started is the a. enzyme energy. b. activation energy. c. catalyst energy. d. chemical energy.

A solution is made by dissolving 8.2 g of NaOH in approximately 450 mL of water in a volumetric flask. The solution becomes quite warm, but after it is allowed to return to room temperature, water is added to total 500 mL of solution.

What is the molarity of an aqueous solution containing 40.0 g of glucose (C6H12O6) in 1.5 L of solution?

List at least 3 factors that can influence a body's temperature after death.

The mass of a 2.0 centimeter3 sample of a substance is 3.2 grams. Calculate the density of the substance. Type the correct answer in the box.