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Europium metal crystallizes in a body–centered lattice with the unit cell measuring 4.58
A° along each edge. Determine the volume of a unit cell.
1. A wastewater treatment plant receives 440 L/s of flow. This wastewater has solids concentration of 192 mg/L. How many pounds of solids enter the plant every day?
One gram of table salt is put into a 0.25 L glass, and the glass is filled with tap water. What is the concentration of salt in mg/mL?
for a sodium atom, the outermost orbit containing electrons is the?
Ethyne gas combusts with oxygen gas according to the following reaction:
Calculate the volume, in mL of CO2 produced when 84.4 g of C2H2 react at 62.2 °C and 1.38 atm. (R = 0.0821 L atm/mol K)
2𝐶2𝐻2(𝑔)+5𝑂2(𝑔)⟶4𝐶𝑂2(𝑔)+𝐻2𝑂(𝑙)
(round to hundredth place)
96.3 g of potassium iodate (KIO3) is used to prepare 300.0 mL of solution. What is the molar concentration of the solution?
A student dissolves 18. g of resveratrol ( C H ,,,) in 250 mL of a solvent with a density of 0.87 g/mL. The student notices that the volume of the solvent does not change when the resveratrol dissolves in it. Calculate the molarity and molality of the student's solution. Be sure each of your answer entries has the correct number of significant digits. molarity = 0 molality = 0
A chemist mixes 71.1 g of carbon tetrachloride with 65.4 g of isopropenylbenzene and 4.02 g of 2-ethyltoluene. Calculate the percent by mass of each component of this solution. Be sure each of your answer entries has the correct number of significant digits mass percentー1 □ component 0% carbon tetrachloride isopropenylbenzene 2-ethyltoluene
A chemist must dilute 57.6 ml of 1.41 M aqueous barium acetate (Ba(C,H,02), solution until the concentration falls to 1.00 M. He'll do this by adding distilled water to the solution until it reaches a certain final volume. Calculate this final volume, in mililiters. Be sure your answer has the correct number of significant digit mL
Urea is the ...... fertilizer
