If a compound contains 8.1 g of nickel and 2.29 g of oxygen, what is the mass percent of nickel in the compound

What are the charges on the three subatomic particles that make up an atom? Explain with short answer.

Which difection do most weather systems move in the united states

A substance that increases the concentration of hydroxide ions in aqueous solution.

What's the name of the ionic compound Zn (OH) 2?

48.0 mL of 1.70 M CuCl2 (aq) and 57.0 mL of 0.800 M (NH4) 2S (aq) are mixed together to give CuS (s) as a precipitate. The other product of the reaction is aqueous ammonium chloride.

Move deep below the ocean's surface

The Ka of an acid is 1.3 x 10^-7. Based on the Ka and its relationship with Kw, what is the value of Kb? Use KaKb=Kw 1.3 x 10^-21 7.7 x 10^-15 1.3 x 10^-14 7.7 x 10^-8

A covalent bond is best described as Question 1 options: the sharing of electrons between atoms. the transfer of electrons. a bond between a metal and a nonmetal. a bond between a metal and a polyatomic ion.

From the list below, choose which groups are part of the periodic table

Gypsum is a mineral that is used in the construction industry to make drywall (sheetrock). The chemical formula for this hydrated compound is CaS04 • 2H20. A hydrated compound contains water molecules within its crystalline structure.