Which force holds together an atom's nucleus? a the strong force b the weak force c electromagnetism d gravity?

what is the range of wavelengths for green light?

What specific clues are used for identifying sedimentary rocks?

What characterizes a strong acid or base

Determine the reagents needed and the synthetic intermediate that is formed in the conversion of the secondary alcohol into the cyanohydrin given below. drag the appropriate labels to their respective targets.

Iron has a density of 7.87 g/cm3. How much does 1 cubic feet of iron weigh?

Does a mole of hydrogen have the same mass as a mole of oxygen? explain your answer.

A 0.500-L sample of H₂SO₄ solution was analyzed by taking a 100.0mL aliquot and adding mL of. After the reaction occurred, an excess of ions remained in the solution. The excess base required mL of for neutralization.

Ammonia can be prepared by the reaction of magnesium nitride with water. The products are ammonia and magnesium hydroxide. Write and balance the equation.

Which period is the shortest in the long form of the periodic table? Name all the elements in this period.

A mole of gas at 0.0oC and 760. torr occupies 22.4 L. What is the volume of this gas at 25. oC and 760. torr