PLEASE HELP 9.26 g of an unknown solid is dissolved in a coffee cup calorimeter that contains 62.0 mL of water.
The measured temperature increased from 23.4 °C to 24.7 °C. The specific heat of water is 4.184Jg
10c-1 and assume the density of the solution is 1.00 g mlº? Calculate the molecular weight of the
unknown solid if the AH was determined to be -2.51 k) moll via another experiment.

The best solution for preventing harm to people and pets from severe hurricanes involves determining and warning residents about what

Read the claim. breakfast is an important meal. it jump starts the body’s process of using calories to break down food. appetite can decrease with age, but going too long without eating causes metabolism to slow down. current research shows that incorporating legumes such as lentils and chickpeas into meals boosts metabolism for twenty-four hours. who might benefit from this claim? people who have a fast metabolism stores that sell exercise equipment people who take vitamin supplements grocery stores that sell legumes

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.