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You are given a sample that contains a mixture of the following two arsenic-containing minerals: dimorphite (As433 S) and getchellite (AsSbS). You start with a sample of this mixture that has a mass of 99.54 grams. You perform a reaction that converts the arsenic (As) in these minerals into the form calcium arsenate (Ca3(AsO4)2), and 124.9 grams of this product are obtained.
What is the percent by mass of dimorphite in the original sample?
Europium (Eu) is used in older television screens to give a red color. The metal can be prepared by electrolysis of molten europium(III) chloride; chlorine gas is a by-product. Write and balance the equation for the reaction.
Consider the hydrazinenitrogen tetroxide rocket fuel reaction: 2N2H4 + N2O4 3N2 + 4H2O How many grams of N2H4 will be consumed by 46 g of N2O4?
A student determines that a 5.869g sample of solid displaces 1.75 mL of water in a graduated cylinder. Another student measures a 7.254g sample of the same metal. What volume of water should the second sample displace
how much energy is required to vaporize 48.7 g of CH2Cl2 at its boiling point if its Hvap = 31.6 kg/mol
Calculate the molarity of a solution of acetic acid made by dissolving 19.00 mL of glacial acetic acid at 25 C in enough water to make 210.0 mL of solution.
Stoichiometry limiting reagent: find the reagent in excess. then calculate the mass or volume of the products formed.
Calculate the number of moles of carbon dioxide in the final equilibrium system obtained by initially adding 1.00 mol of H2, 2.00 moles of CO2, 0.750 mol of H20, and 1.00 mol of CO to a 5.00 L reactor at 990 C.
bac is often reported in weight-volume percent wv. for example a bac of 0.08 corresponds to 0.08 g ch3ch2oh per 100 ml
question what is the molar concentration of sodium ions in a solution in which 75.02 g of sodium sulfate and 102.75 g
describe the nature and characteristics of pcbs. why are they of importance to an ehamps or fs professional who
How do you get from miligrams to grams using a conversion chart, then putting the answer into scientific notation?
Drinking water wells frequently withdraw water from confined aquifers. Irrigation wells frequently withdraw water from either unconfined or confined aquifers.
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