One mole of nitrous acid (HNO2) contains 1.00 gram of hydrogen (H), 14.0 grams of nitrogen (N), and 32.0 grams of oxygen (O). What is the percent composition of nitrogen in nitrous acid?

Changes in color, energy, and odor are indications that a

What area of the periodic table contains the most highly reactive elements

Some light passes through. No light passes through. All light passes through. 1. Translucent 2. Transparent 3. Opaque

What is the density of an unknown substance that has a mass of 50 g and its measurements are 9.0 cm high, 10cm long, and 2 cm wide?

Are the chemical reactions that take place when a battery is connected endothermic or exothermic? Be specific as you explain your answer.

What information does a net ionic equation give that a complete ionic equation does not show

What is the molality of a solution containing 4.0 moles of solute in 3.2 kg of solvent? Round to the nearest tenth. Don't forget the units.

What is the name of a binary compound made up of lithium and chlorine?

A scientist in London and a scientist in California both conducted independent investigations that produced similar results.

When magnesium combines with oxygen, the reaction involves a. a conversion of protons into electrons. b. sharing of electrons between Mg and O. c. transfer of electrons from Mg to O. d. transfer of electrons from O to Mg.