Contain carbon atoms with four single, covalent bonds

State the aufbau principle.

1. What is the colour of FeSO4.7H20 crystals? How does this colour change upon heating? Give balanced chemical equation for the changes. 2. a. What are redox reactions? b. Why is the reaction between MnO2 and HCl a redox reaction? c.

The mole fraction of A (XA) in the vapor phase of a mixture of two liquids is 0.24 and the sum of the partial pressures is 740 torr.

Be sure to answer all parts. Calculate the molality, molarity, and mole fraction of FeCl3 in a 24.0 mass % aqueous solution (d = 1.280 g/mL).

How many valence electrons are there in krypton? how many total electrons? explain how you know.

Hydrogen and nitrogen react to form ammonia. Which statement best describes the reactants and product at equilibrium? A. The concentration of hydrogen and nitrogen equals the ammonia concentration B.

What element is white, shiny, metallic solid, reacts slightly to air, density is 1.55

What are three key words or phrases related to solutions?

What is the sum of the coefficient when the following equation is balanced: __ H2SO4 + __ NaOH → __ H2O + __ Na2SO4 a. 4 b. 5 c. 6 d. no right answer

How many molecules of rubp are oxygenated for each molecule of co2 that is released by photorespiration?