How many electrons are in the second energy level of an atom of each element?

A. Chlorine

B. Phosphorus

C. Potassium

When a theory is disproved by further evidence, which of the following occurs? A.) It should be considered a failure. B.) It adds to scientific knowledge. C.) It becomes a law. D.) New data must be found to support it.

How are magnetic patterns in seafloor rock evidence of seafloor spreading?

What happens to the average kinetic energy of a gas when the particles of the gas collide against each other at a constant temperature and volume? Explain your answer.

Arrange these 3 reactions according to increasing DS. (1) CH4 (g) H2O (g) - -> CO (g) 3 H2 (g) (2) C (s) O2 (g) - -> CO2 (g) (3) H2O2 (l) - -> H2O (l) 1/2 O2 (g) 1 < 3 < 2 2 < 3 < 1 2 < 1 < 3 3 < 2 < 1 3 < 1 < 2

If you begin with 72 grams of Nickel, how many moles of Ni would you have?

Which of the following is NOT true of nitrogen fixation? (A) it is a process that occurs exclusively in some species of prokaryotes (B) it sometimes occurs in bacteria that are mutualistic symbionts in plant roots (C) it is the metabolic process

What two pieces of information do u need to describe force

Why are the atomic masses for most elements not whole numbers?

An aqueous solution is 0.387 m in hcl. what is the molality of the solution if the density is 1.23 g/ml?

Carbon monoxide reacts with oxygen to form carbon dioxide. 2 CO (g) + O2 (g) → 2C02 (8) In a 1.00 L flask, 3.40 atm of CO reacts with 2.60 atm of O2. Assuming that the temperature remains constant, what is the final pressure in the flask? 4.30 atm 2.