What are two characteristics that distinguish compounds from mixtures

Chemical reactions that release energy possess reactants with lower energy than their products. True or False Heat is the most common form of energy absorbed or released in chemical reactions. True or False

Decide whether each molecule is stable or not. decide whether each molecule would be diamagnetic or paramagnetic. calculate each molecule bond order.

Does the law of conservation of mass apply to physical changes or just chemical changes?

If a solution has a perfect neutral pH, what is the concentration of hydrionium ions in the solution

Determine the molar solubility of agbr in a solution containing 0.200 m nabr. ksp (agbr) = 7.7 * 10-13. determine the molar solubility of agbr in a solution containing 0.200 m nabr. ksp (agbr) = 7.7 * 10-13. 5.8 * 10-5 m 0.200 m 1.54 * 10-13 m 8.

If 0.20 bushel is 1 dozen apples and a dozen apples has a mass of 2.0 kg, what is the mass of 0.50 bushel apples?

Atmospheric pressure is 1.00 atm, but air is only composed of 21.0% (by moles) oxygen. thus, the partial pressure of oxygen in air is less than 1.00 atm.

Your answer should have the same number of significant figures as the starting measurement. 3201 mL = cm³

It is easier to push a sofa across a rough surface like carpet than a smooth surface like a hardwood floor. True False

Which of the following is not equal to 0.536 kilometers? 53.6 hectometers (hm) 536 meters (m) 536,000 millimeters (mm) 53,600 centimeters (cm)