How many moles is 2.17 x 10^ 23 representative particles of bromine?

When an aqueous solution at room temperature is analyzed, the [H+] is found to be 2.0 * 10-3 M. What is the [OH-]? A. 5.0 * 10-12 M B. 2.0 * 10-11 M C. 4.0 * 10-6 M D. 5.0 * 10-11 M

How many oxygen are present in 2.50 mol of oxygen molecules?

When a solution is considered to have a high concentration of hydrogen ions (H+) is also considered to be? a) acidic b) basic c) neutral d) hot

What is the difference between ionic compund and covalent compound

What kinds of elements form an ionic bond?

Why do cells have a plasma membrane? A. to separate protein from the nucleus B. to distinguish plants from animals C. to define the size of the cell D. to separate the inside of the cell from its enviroment

Base on its molecular mass, what is the molar mass of iron

For the following reaction in aqueous solution, identify all those species that will be spectator ions. Select all that apply. Na, SO4+Hg (NO3) 2HSO4+2NaNO3 Choose one or more: A. Hg2S04 B. Na2S04 C. Nat D. NO3 E. SO42- F. Hg2 (NO3) 2 G. NaNO3 H.

One mole of which hydrocarbon requires 8 mol o2 to achieve complete combustion to give carbon dioxide and water?

How many bromine atoms are present in 39.9 g of CH2Br2