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What volume of 0.140 M K2Cr2O7 will be required to oxidize the Fe2+ ion in 81.5 mL of 0.176 M FeSO4 solution? Cr2O72- + Fe2+ Cr3+ + Fe3+ (acid solution)

A sample of crude potassium iodide was analyzed using this reaction (not balanced): I- + SO42- I2 + H2S (acid solution) If a 4.19-g sample of crude KI produced 1.33 g of iodine, what is the percent purity of the KI?

which equation represents the line that passes the point (1,5) and has a slope of negative 2? a) y=2x+7 b) y=-2+11 c) y=2x-9 d) y=2x+3

Which context describes a difference of rational numbers? A. Comparing the daily high temperature and low temperature B. Finding the average of daily high temperatures C. Recording the temperature hourly D. Determining the coldest temperature in a month

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a) L=Iw L=(1/3 md^2)w b) L1=L2

3/12

a) was suppose to be -2x+7 so the answer would be a since it the answer is 5 right? thanks so much :)

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what is 37.52 rounded to the nearest whole?

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Which scenario about books represents finding the difference? A. Finding the location of a book in a store B. Finding the number of books remaining after a sale on books C. Finding the type of books in a store D. Finding the total number of books in a sto...

The temperature on Monday is −4°C. On Tuesday, it is 13° colder. What is the temperature on Tuesday? A. −17°C B. 9°C C. −9°C D. 17°C

Ping dove off a 10 meter platform. He reached a depth of 6 meters in the water. What was the change in height? A. 60 meters B. 4 meters C. 16 meters D. 64 meters

A parasail is 1/20 of a meter above the water. Then, after 10 minutes, the parasail is 1/50 of a meter above the water. What is the change in height? A. 1/50 meter B. 3/100 meter C. 7/100 meter D. 1/20 meter