Which of the listed properties are the same for the elements carbon (C), nitrogen (N), and oxygen (O) ?

Hint: Look at your periodic table.

number of protons

number of energy levels

number of neutrons

number of valence electrons

The temperature of 360 mL of a gas is decreased from 20°C to - 40°C while the pressure is held constant. What is the new volume of the gas?

Which hybridization scheme occurs about nitrogen when nitrogen forms a double bond?

An increase in the temperature of a liquid causes a (n) ? A - increase in the kinetic energy of the particles B - endothermic reaction to occur C - decrease in the velocity of the particles D - exothermic phase change to occur

The solid-state transition of Sn (gray) to Sn (white) is in equilibrium at 18.0 ˚C and 1.00 atm, with an entropy change of 8.8 J K-1 mol-1. The density of gray tin is 5.75 g cm-3; that of white tin is 7.28 g cm-3.

Explain two reasons why we can conclude that the rise of the water in the glass tube is due to root pressure and not transpiration or capillarity

A chemist uses 0.25 L of 2.00 M H2SO4 to completely neutralize a 2.00 L of solution of NaOH. The balanced chemical equation of the reaction is given below. What is the concentration of NaOH that is used?

How to find the number of neutrons in an atom

A balanced chemical equation indicates both the number of particles of reactants and products and the number of a. orbits. c. nuclei. b. electrons. d. moles

To squeeze a gas into a smaller space

Why does soda fizz when you poor it into a cup?