The central core of an atom is called the

a. reactor vessel.

b. neutron.

c. proton.

d. nucleus.

The mass of a substance is independent of the amount of the substance, while density depends on the amount of the substance.

An object has a mass of 23.701 g and displaces 6.9 mL of water. What is the density of this object?

Is a solids shape fixed, or can it be changed?

Is H2O considered a molecule or a compound?

Suppose you have an indicator that turns from yellow to red over a pH range of 6.4 to 8.0, respectively. Fill in the blanks for each of the following.

The mass flow rate of gasoline leaving a refinery is 1610 kg/min. The specific gravity of a gasoline is 0.700. A retail gasoline pump is able to fill a 20.0 gallon automobile tank in 1.80 minutes.

Calculate the solubility of cux (ksp=[cu2+][x2-]=1.27*10-36) in a solution that is 0.190 m in nacn.

An atom has seven valance electrons which element could have this type of atom

How is the ocean important to human survival? restate the question

A sample of pure lithium contains 7.99% lithium by mass. What is the % lithium by mass in a sample of pure lithium nitrate that has twice the mass of the first sample?