What volume (in L) of 1.20 M FeCl2 would be required to obtain 0.780 moles of CI" ions?

What mass in grams of solute is needed to prepare 0.110 L of 0.126 M K2Cr2O7? Express your answer to three significant figures.

a person consumes 4lts of oxígen (O2) per minute when breathing.how Many moles would that be per hour?

Suppose that a solution prepared by dissolving 0.554 g of MgCl2 in about 30 mL of water is mixed with a solution that contains excess K2CO3 dissolved in about 30 mL of water.   What is the theoretical yield (in grams) of MgCO3 in the precipitation reaction that occurs?

3. A student mixes 100.0 mL of a 0.100 M solution of potassium phosphate with 100.0 mL of a 0.125 M solution of copper (II) sulfate and obtains a blue solid. (a) Write the balanced chemical equation for the reaction including physical states. (b) Determine the limiting reagent. (c) Calculate the number of moles of the excess reagent after the reaction is completed. Record servation

It is known that when mixed in solution aqueous, silver ions will react with chloride ions to form insoluble silver chloride. Upon dissolving a 5.000 g solid mixture of AgNO3 and KNO3 in a concentrated KCl solution, 1.582 grams of a white precipitate, AgCl(s), formed. Determine the percent, by weight, of AgNO3 in the original mixture.

For the dehydrohalogenation (E2) reaction shown, draw the major organic product. Select Draw Rings More Yoe tert-butanol heat Br

What is the molarity of a solution prepared by dissolving 44.2 g of Ca(NO3)2 into enough water to make 274 mL of solution?

Balance the following chemical equations (type corresponding coefficients (1, 2, 3, ...) in blanks). NO2 + F2→ NO2F

3. In a given dilution, the volume of the solution increases from 10.00 mL to 50.00 mL. We can conclude that: LIf the molarity of the final solution is o.0045oo M, the molarity of the original solution is o.02250 M II. The dilution factor is 5