Properties of operations to prove your conjecture
Consider the equation (-1)(-1)+(-1)=0. How can this equation be true? Can you use the properties of operations to prove your conjecture?
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Ann earns $7.75 per hour working. She needs at least $425 for a stereo. Write an inequality that describes how many hours she must work to reach her goal.
Rondello Company is considering a capital investment of $152,200 in additional productive facilities. The new machinery is expected to have a useful life of 5 years with no salvage value.
What personnell records would you suggest for a small retailer with three employees? What sets the minimum wage, and what is the current wage rate?
If 11.7 grams of carbon dioxide is produced from the decomposition of 30.7 grams of calcium carbonate, what is the percent yield of the reaction?
The tank is filled with O2 to a pressure of 175 atm at 25°C. How many moles of O2 does the tank hold, and what volume would the gas occupy at 1.00 atm and 25°C?
When 0.848 g of finely divided iron is burned, 1.212 g of a reddish brown oxide is obtained. Write a balanced chemical equation for the reaction of iron and molecular oxygen based on the empirical formula.
Wayne Terrago, controller for Robbin Industries, was reviewing production cost reports for the year. One amount in these reports continued to bother him-advertising.
A 1.5 mol sample of PCl5 is injected into a 0.50-L reaction vessel. Calculate the concentration of each gas at equilibrium.
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