PLEASE HELP WILL MARK BRAINLIEST!!
Lithium nitride reacts with water to form ammonia and aqueous lithium hydroxide.

a. Write and balance the chemical equation.
b. What mass of water is needed to react with 32.9 g of lithium nitride?
c. How many moles of ammonia are produced from 66 g lithium nitride?
d. Calculate the mass of lithium nitride that must be added to excess water to produce 15.0 L ammonia at STP?

Categorize them by metal, nonmetal, in periodic tableductilenon-ductilemalleableoften gain electrons easilygood conductorpoor conductorcan be liquidselements

Tooth enamel consists mainly of the mineral calcium hydroxyapatite, ca_10(po_4)_6(oh)_2. trace elements in teeth of archaeological specimens provide anthropologist with clues about diet and diseases of ancient people. students at hamline university measured strontium in enamel from extracted wisdom teeth by atomic absorption spectroscopy. solutions with a constant total volume of 10.0 ml contained 0.726 mg of dissolved tooth enamel plus variable concentrations of added sr. added sr find the concentration of sr in the 10 ml sample solution in parts per billion = ng/ml. find the concentration of sr in tooth enamel in parts per million = mu g/g.

How many atoms or molecules are there in a mole of a substance?