When the number of protons and electrons are the same the atom is

A.) neutral.

B.) charge.

C.) balanced.

D.) unbalanced.

Bromine (63 g) and fluorine (60 g) are mixed to give bromine trifluoride. a) Write a balanced chemical reaction. b) What is the limiting reactant? c) Determine how many grams of the product will form if the percent yield of the reaction is 80%.

A doubling of the concentration of a doubles the rate of the reaction. a. True b. False

A 27.40 g sample of liquid mercury is initially at 158.30°C. If the sample is heated at constant pressure ( = 1 atm), kJ of energy are needed to raise the temperature of the sample to 376.20°C. How much energy in kJ is required?

Is humidity a measure of water vapor or brametric pressure

What is the valence electron configuration of the group 2a elements?

What is the molarity of a solution with 1.17 moles of Ca (OH) 2 disolved in 0.2 liters of water? A. 1.17 M B. 0.2 M C. 0.17 M D. 5.85 M

What happens to acetone molecules when you add heat to a beaker of liquid acetone?

An effluent discharge with a flow of 1.5 m3/s and an ammonium-N concentration of 2 mg/L is released to a river with a flow of 12 m3/s and an ammonium-N concentration of 0.015 mg/L.

If you were to pour 4 different liquids into a glass and the liquids separated into 4 layers, which liquid would have the highest density?

As magma rises to the surface what happens to the gases in it