The area of a rectangle is 12 in squared. What is the area in cm squared. There are 2.54 cm in an inch.

A 2.45 g sample of a gaseous oxide of nitrogen occupies a volume of 1.34 l at 28°c and 745 mmhg. What is the most likely formula for the gas?

The half-life of radium-226 is 1600 years. How many grams of a 0.25 g sample will remain after 4800 years?

A sample of well water is tested and found to have 1350 ppm Iron. If a 1000g sample was tested, how many grams of iron were in it?

3. What is the molecular formula of a compound that has an empirical formula of CO2 and a molar mass of 220 g/mol?

How are chemical and physical changes different on a molecular level? Chemical changes involve the breaking of bonds in molecules. Physical changes do not involve molecules. Physical changes cause new molecules to form.

Which of the following has primary responsibility for eliminating alcohol from the bloodstream

A hydrocarbon with only single bonds is classified as a. an alkene. b. an alkyne. c. saturated. d. unsaturated.

How many liters of 2M solution can be made using 500. grams of KI?

How many moles of copper are present in a sample of tennantite with a mass of 2370 grams

The Calvin cycle is another name for the