The element with 8 electrons in its 3d sublevel is

a. O.

b. Ne.

c. Ar.

d. Ni.

What does composition mean in science

Which of the following are likely to form an ionic bond? • copper atoms • hydrogen atoms • hydrogen and oxygen atoms • copper and fluorine atoms

rinking water suggest an upper limit of 250 mg/L for chloride ion. If 1.03*104 liters of water in a storage tank contains 1.40 grams of Cl-, what is the contaminant level in ppm? in ppb? Is this level acceptable based on EPA guidelines?

if you have 0.5 grams of CaCl2 dissolved to make 15mL of solution, what is the molarity of the solution?

If 82.3 l of an ideal gas is cooled from 46 degrees calius to - 166 what will the volume of the gas become

Refrigerators are usually kept at about 5°C, while room temperature is about 20°C. If you were to take an ""empty"" sealed 2-liter soda bottle at room temperature and place it in the fridge, would you expect it to contract to one-fourth its original

You want to analyze a cadmium nitrate solution. what mass of naoh is needed to precipitate the cd2 + ions from 32.7 ml of 0.499 m cd (no3) 2 solution?

How much is 35° C in F?

Which describes a precipitate in a chemical reaction? a a gaseous product formed from aqueous reactants b a solid reactant that forms aqueous product c a gaseous reactant that forms aqueous products d a solid product formed from aqueous reactants

Prepare a solution that is 0.1 M acetic acid and 0.1 M sodium acetate by measuring out 5.0 mL of the 1.0 M acetic acid solution and 5.0 mL of the 1.0 M sodium acetate solution in a 100 mL graduated cylinder, diluting the 10.