How many moles of iron are present in 3.15 x 1023 atoms of iron?

Which of the following is a mixture? a - milk b - salt c - crude petroleum d - sea water

The gaseous mixture is found to have a mass higher heating value of 420.10 kj/mol. "what is the composition of the gas?"

Theoretically, how many moles of carbonic acid will be produced by 3.00 g sample of NaHCO3?

0.268/6.234 significant figures

Which soil cannot be rolled into balls or clumps? a. silt b. sand c. loam d. clay

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

Is a nylon string conductor or insulator