Polar molecules tend to have higher melting and boiling points than non polar molecules. which of the molecules shown will have the highest boiling point? a) water b) methane c) carbon dioxide d) not enough information

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?

Convert .347 kilometers to miles show your work

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.