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1) H2 is produced by the reaction of 118.5 mL of a 0.8775-M solution of H3PO4 according to the following equation: 2Cr + 2H3 PO4 ? 3H2 + 2CrPO4 .
2) . In an accident, a solution containing 2.5 kg of nitric acid was spilled. Two kilograms of Na2CO3 was quickly spread on the area and CO2 was released by the reaction. Was sufficient Na2CO3 used to neutralize all of the acid?
3) What volume of 0.750 M hydrochloric acid solution can be prepared from the HCl produced by the reaction of 25.0 g of NaCl with excess sulfuric acid? NaCl(s) + H2SO4 (l) ? HCl(g) + NaHSO4 (s)
4) A mordant is a substance that combines with a dye to produce a stable fixed color in a dyed fabric. Calcium acetate is used as a mordant. It is prepared by the reaction of acetic acid with calcium hydroxide. 2CH3CO2 H + Ca(OH)2 ? Ca(CH3CO2 )2 + 2H2 O What mass of Ca(OH)2 is required to react with the acetic acid in 25.0 mL of a solution having a density of 1.065 g/ mL and containing 58.0% acetic acid by mass?
5) . A sample of 0.53 g of carbon dioxide was obtained by heating 1.31 g of calcium carbonate. What is the percent yield for this reaction? CaCO3 (s) ? CaO(s) + CO2 (s)
The only variable input a janitorial service firm uses to clean offices is workers who are paid a wage, w, of $8 per hour. Each worker can clean four offices in an hour. Determine the variable cost, average variable cost, and the marginal cost of cle..
Determining ? Experimentally: Recall that ? is the ratio of a circle's circumference to its diameter and that we can calculate the area of a circle with the formula A=?r2.
1. the price of french fries falls by 10 per cent and quantity of french fries demanded increases by 12 per cent. we
Why does a fixed exchange rate policy require painful adjustments in an economy? Explain with economic reasoning and an appropriate diagram.
How was the experience of the 1970s taught economists? What are the limitations of fiscal policy?
Using the accural basis revenue on the income statement was$124,320. Accounts receivable were $3,320 on January 1 and $3,600on December 31. Unearned revenue was $1,040 on January 1 and $1,690 on December 31.
Calculate inflation using the GDP deflator index and explain why consumer price index (CPI) overstates inflation when compared to inflation rate determined.
What were the issues created by the development of the railroads that created the need for a new and different management and business structure for railroads?
Illustrate what does this have on the monetary base, the money supply, total deposits, and economic growth.
Suppose that a car dealership wishes to see if efficiency wages will help improve its salespeople's productivity. Currently, each salesperson sells an average of one car per day while being paid $20 per hour for an eight-hour day.
How do you modify a D-type flip-flop to perform the same function as a J-K flip-flop?
What are the short- and long-term economic benefits and costs associated with our current high federal government budget deficits? Do you think the economic benefits outweigh the economic costs, or not? Why?
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