1. What is the percent composition of CaCO₃? Show your work.

2. What is the mass of sodium in 50 grams of salt? Show your work.

3. What two general products do combustion reactions create?

4.

You have separate solutions of hcl and h2so4 with the same concentrations in terms of molarity. you wish to neutralize a solution of naoh. which acid solution would require more volume (in ml) to neutralize the base?

Which saturated solution would be the most dilute at 0°C? A) KI B) NaCI C) NaNO3 D) KClO3

What defines a polar covalent bond

The various atomic masses of the same element are called neutrino positron critical mass isotopes

The rare earth elements include

List one reason as to why historical growth has slowed in recent years.

Name some specific liquids that you think might contain less than 80 percent water.

The ostwald process is used commercially to produce nitric acid, which is, in turn, used in many modern chemical processes. in the first step of the ostwald process, ammonia is reacted with oxygen gas to produce nitric oxide and water.

Convert 6.766 * 10 ms into s

How much CO2 is produced from 10g of CH4?