Na2CO3(a. q) + 2HCL(a. q) --> 2NaCl(a. q) + CO2(a. g) + H2O(l) If this reactionbis carried out by mixing 2.12g of Na2Co3 and 1.5g of HCL

Question:

1.Which of the following limiting reactant?

2.Calculate the number Of Nacl Formed?

3.Calculate the volume of C02 produced at Normal temperature and pressure?

4. Calculate the number of molecules of H20 formed?

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.

To find the work done, the force exerted and distance moved are multiplied. a couch is moved twice before you are happy with its placement. the same force was used to move the couch both times. if more work is done the first time it is moved, what do you know about the distance it was moved? a) when more work was done, the couch was moved the same distance. b) when more work was done, the couch was moved less. c) when more work was done, the couch was moved further. d) when more work was done, the couch wasn't moved at all.

What is the empirical formula of a compound that is 50.7% antimony and 49.3% selenium ?