19. When an atom of iron loses all of its 4s electrons and one of its 3d electrons, what is its charge?

How many moles of co2 must dissolve in an excess of water to produce 3 moles of h2co3?

Which of the following is one way that nuclear reaction different from chemical reaction

What name is given to a polymer where all of the substituents (i. e., the R groups) are in the same relative orientation (i. e., on the same side of the polymer chain) ?

What is the total mass of a mixture of 3.50x10^22 formula units na2so4, 0.500 mol h2o, and 7.23 g agcl?

5) Which of the elements have a charge of 2-, as determined by their locations on the periodic table?

Predict the following chemical formula for a compound between calcium and chlorine.

Two pieces of silk have an electric charge after being rubbed on a piece of amber. What will happen when the two silk pieces are brought close together? A. They will repel one another. B. They will attract one another. C.

The chemicals formula of glucose is c6h12o6. what are the names of the elements in glucose and how many atoms of each element are present in glucose molecules

When K-37 undergoes positron emission, what is the resulting atom? A) K-37 B) K-38 C) Ar-37 D) Ar-38

Consider the following reaction where Kp = 4.55*10-5 at 723 K: N2 (g) + 3H2 (g) ⇋ 2NH3 (g) a) If the three gases are mixed in a rigid container at 723 K so that the partial pressure of each gas is initially one atm, what will happen?