2. Which change in oxidation number indicates

oxidation?

A) - 1 to + 2

C) - 1 to - 2

B) + 3 to + 2

D) + 2 to - 3

Heavy water, D2O (molar mass 20.03) can be separated from ordinary water by the difference in the relative rates of diffusion of the molecules in the gas phase. Calculate the relative rate of diffusion of H2O to D2O. (Atomic weights: O

Does yeast need air to release carbon dioxide

Which is a disadvantage of captive breeding? A. rarely successful B. harmful to many animals C. usually results in overpopulation D. often expensive

What is the molar mass of Fe (C2H2O2) 3?

An objective that revolves around a planet is ... A) star B) moon C) dwarf planet

A specific, electrically neutral atom of boron has 5 protons, 5 electrons, and 6 neutrons. what is the mass number of this atom of boron? 6 5 11 16

When does hail happen?

For the reaction, calculate how many moles of the product form when 0.012 mol of O2 completely reacts. Assume that there is more than enough of the other reactant. 4Al (s) + 3O2 (g) →2Al2O3 (s) Express your answer using two significant figures.

Nuclei with too many or too few neutrons are?

Be sure to answer all parts. Enter the formula for potassium dihydrogen phosphate and determine its molecular (formula) mass.