Find the final concentration
59.0 mL of a 1.50 M solution is diluted to a volume of 278 mL. A 139-mL portion of that solution is diluted using 147 mL. What is the final concentration?
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A 1: 1.8: 4.5 mix has a water/cement ratio of 0.6 and a cement content of 300 kg/m3. The temperature of the ingredients are as follows: cement 180C, aggregate:300C, water:20 0C.Assuming that the aggregate has negligible absorption, calculate th
How would you know a strong acid from a weak acid without looking at some data? For example HBr, HI, HCI are all stong acids but HF or HB is a weak acid. I am asking because when you mix in a solution the strong acid determines the PH. Hope you ca
Consider the reaction by which HBr is added to ethene to give bromoethane. Write the mechanism of the reaction, using curly arrows to show the movement of electrons.
The fixture AC is designed with a screw adjustment to regulate the height of the 900 N load supported by the roller at A. The screw bears against a smooth surface at B. Determine the reaction forces at points B and C. Neglect the weight of the
Draw a pC-pH graph of the carbonate system and uses it to determine the pH of the system. Repeat this for initial concentrations of carbonic acid of 0.62 and 620 mg/L.
A vertical curve is formed when a rural highway passes under a bridge joining a -8% grade to the horizontal grade satisfying the requirement for safe speed of 90 Km/hr . Determine the minimum clearance required betwwen the highway pavement sur
Which of the following reduces the solubility of calcium fluoride?
Given bulk density as 1300kg/cubic meter and field capacity as 22% by weight and permanent wilting point as 10% by weight calculate available water capacity.
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Discuss and analyze the various theories associated with mate selection. Compare and contrast the American culture's models of mate selection
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