One isotope of nitrogen has 7 protons and 8 neutrons. Which is the correct reference for this isotope?

A.

nitrogen-15

B.

nitrogen-8

C.

nitrogen-7

D.

nitrogen-1

What moon that immediately precedes the new moon as what

How many kilojoules of heat are released when 32.0 g of NaOH are dissolved in water? (The molar heat of solution of NaOH is - 445.1 kJ/mol.)

What relationship do you notice between atomic number and ionization energy? Direct / Inverse

Select the following group of elements that contains elements with similar chemical properties A. N, As, Bi B. Rb, Sn, In C. Li, Mg, Ga D. W, Tc, Fe

Which statement is true at STP? (The atomic mass of Zn is 65.39 u.)

How much ice at a temperature of - 17.5 ∘C must be dropped into the water so that the final temperature of the system will be 31.0 ∘C?

Why does a gas fill completely the vessel in which it is kept?

Individuals who work full time and those who work part-time enjoy basically the same number of paid leave benefits. True False

There is a large increase in ionization energy between the second and the third ionization energies of a metal. What kind of ion is the metal likely to form? Include the charge in your answer.

Which of the following are true statements about equilibrium systems? For the following reaction at equilibrium: CaCO3 (s) ⇌ CaO (s) + CO2 (g) adding more CaCO3 will shift the equilibrium to the right.