Which of the listed properties are the same for the elements carbon (C), nitrogen (N), and oxygen (O) ?

Hint: Look at your periodic table.

number of protons

number of energy levels

number of neutrons

number of valence electrons

Based on the reaction, identify the products. BeF2 + Mg - MgF2 + What type of reaction does this represent?

What is the pH of 0.0086M LiOH solution

If a motionless object has a weight of 25 N, what is true of the normal force acting on the object? A. It is 25 N and acts in the same direction as the weight. B. It is 25 N and acts in the opposite direction to the weight. C.

2 radioactive isotopes of oxygen?

Question 6 A 9.0-kg crate rests on a frictionless surface. It then experiences a net horizontal force of 45. newtons. What is the resulting acceleration of the crate? A 0.0 m/s2 B 0.20 m/s2 C 5.0 m/s2 D 36 m/s2

What is the mass of 3.75 moles of NaCI? (Na = 22.99g/mol, CI = 35.45 g/mol)

Convert to grams 0.100 moles of Co2

In order to use the value 22.4 L for molar volume in a mass-volume or volume-mass stoichiometry problem, the gas must be assumed to be at STP. A. True B. False

The gravitational attraction between two objects would increase if both masses are

If the pH indicator bromothymol blue was added to the nitric acid solution, it's colour would be?