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Magnesium deficiency is a common problem in the United States. Magnesium salts (e.g. Magnesium chloride) are more bioavailable than are magnesium oxide or magnesium hydroxide, which are commonly found in vitamin supplements. A tablet containing magnesium chloride is weighed, ground, dissolved, and reacted with silver nitrate soluiton. The dried AgCl precipitate weighed 1.9293 g. The tablet weighed 0.9428 g. Calculate the weight percent of MgCl2 in the original tablet.
During physical activity, lactic acid (MM = 90.08 g/mole) forms in muscle tissue and is responsible for muscle soreness. An elemental analysis shows that it contains 40.0 mass percent C, 6.71 mass percent H
Magnesium metal rects with oxygen to make a white powder knon as magnesium oxide. As the reaction proceeds, a bright white flame is seen. It is found that 2.6 g of magnesium reacts with1.6 of oxygen.a) What is the word equation
what is ture when equal masses of a and b are reacted?
If your electricity comes from a 33% efficient nuclear power plant, how many Pu-239 nuclei are produced as a result of your leaving the light on?
0.300 moles of an unknown monobasic weak acid are added to 1.20 l of water. the resulting solution has a ph of 8.800.
calculate the chloride concentration in mEq/L of a solution prepared by diluting 25 g of BaCl2 to 2 L. (WM = 208)
If during the course of the reaction, the vessel is found to contain 9.75mol of C, 15.0mol of H2O, 3.10mol of CO, and 7.80mol of H2, what is the reaction quotient Q?
What is the composition of this mixture on a mole percent basis? Show all calculations and report answer to correct number of significant figures
When compound X undergoes ozonolysis, acetone, is the only product produced. Propose a structure for compound X.
Estimate the overall charge on the following proteins at pH 3, 7, and 10. If a mixture of these three proteins were run on an IEF gel, what would the gel look like
Solve an equilibrium problem (using an ICE table) to calculate the pH of each of the following solutions. .14 M CH3NH2
how many milliliters of concentrated hydrochloric acid solution 36.0 hcl by mass density 1.18 gmol are required to
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