What charge would be formed by lithium?

A) - 1

B) - 3

C) + 1

D) + 3

The identity of an element is determined by A. the number of neutrons B. the weight of the nucleus OC. the number of electrons D. the number of protons Reset Selection

Which of the following atoms will not react with water

The composition of dry air at sea level is 78.03% N2, 20.99% O2, and 0.033% CO2 by volume. (a) calculate the average molar mass of this air sample (b) calculate the partial pressures of N2, O2, and CO2 in atm.

You have two water samples. Sample X has a volume of 750 mL and a temperature of 42◦C. Sample Y has a volume of 380 mL and a temperature of 42◦C. Which sample contains the most heat? 1.) Sample Y 2.) Both samples contain the same amount of heat. 3.

Which layer of the atmosphere is directly above the troposphere?

What is the oxidation number for Our in NaHCO3?

To determine if a reaction is exoteric a student should use

Which of the following are physical properties of a penny? Choose all that are correct. Select one or more:a. Slightly red in color. b. Conducts electricity very well. c. Reacts to oxygen when heated. d. Resists corrosion from most acids.

NO2 and N2O4 undergo the reaction shown. When a sealed container of NO2 reaches chemical equilibrium, which must be true? A) No N2O4 is present. B) No chemical reactions are occurring. C) The rates of the forward and reverse reactions are equal.

What differences did you notice in the different states of water