What element has 3 electrons in its 5d sublevel?

A. Nd

B. Nb

C. Ta

D. U

Use the unbalanced equation NH3 + O2 = NO + H2O, what is the mole ratio between NH3 and NO

Barnard's Star is a red dwarf. It is located 5.9 light years from Earth. (One light year is the same as 9.46 trillion kilometers.)

Which statement describes how the bond between two oxygen atoms is formed?. a) by sharing valence electrons with many other atoms. b) by the repulsion between ions of like charges. c) by the attraction of two oppositely charged ions.

Why the level of solution increase in the side of the solution

A certain alcohol contains only carbon, oxygen and hydrogen. When 50 grams are combusted in air, 26.05 grams of C and 6.630 grams of H20 are produced. If the molecular mass of this alcohol is 189 amu, what is its molecular formula?

In these solutions, identify the solute and the solvent Sea water, a solution composed of a variety of salts dissolved in water. The salt is the Soda water, a solution composed of carbon dioxide gas dissolved in water.

What is an Element and how it different from a Atom?

4 HCI + O2 - > 2 H2O + 2 CH2 How many moles of H2O can be produced from 30. moles of HCI?

How many molecules of nitrogen gas are in 22.4 L? A. 6.022 * 10^22 B. 6.022 * 10^23 C. 6.022 * 10^24 D. 6.022 * 10^25

What is the pH of a 0.0025M HCI solution?