What structure do all of these elements have in common?

A) number of protons

B) numbers of electrons

C) number of energy levels

D) number of valence electrons

A sample of n2o gas has a density of 2.85 g>l at 298 k. what is the pressure of the gas (in mmhg) ?

The somatic system controls an animals

Why the measured pressure of a gas under conditions that are very close to those that would result in condensation will be lower than what the ideal gas law would predict?

If 0.500 L of a 4.00-M solution of copper nitrate, Cu (NO3) 2, is diluted to a volume of 1.50 L by the addition of water, what is the molarity of the diluted solution?

How to calculate carbon dioxide in 100kg of air?

Sodium chloride is stirred into water to form a solution. in this case, what are sodium chloride and the water?

What can form as a result of a chemical reaction?

A solution of orange juice that weighs 500 g contains liquid juice and solid pulp. All of the pulp is removed from the juice. The pulp is found to weigh 50 g. How much would the remaining liquid juice weigh? A. 50 g B. 250 g C. 450 g D. 500 g

Assume 3 molecules of Fe react according to the following equation. 3Fe + 4H2O Fe3O4 + 4H2 How many molecules of H2 are produced? How many water molecules are required? What is the mole ratio of Fe to H2O?

10.0 mL of a HF solution was titrated with a 0.120 N solution of KOH; 29.6 mL of KOH were required to completely neutralize the HF. Calculate the normality of the HF solution.