Calculate the heat of fusion of ice
50.0 mL of water are placed in a calorimeter. When 15.0 g of iceare added to the calorimeter, the temperature drops from 70.0 C to51.2 C. Calculate the heat of fusion of ice in kJ/g, and inkJ/mol
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The average number of pounds of meat a person consumes a year is 218.8 with a standard deviation of 25 pounds. Assume normal distribution. if a sample of 40 people is selected, what is the probablility that the mean of the sample will be less than
What volume of dry hudrogen would be produced understandard conditions when 0.250 g of magnesium reacts withexcess HCL?
Suppose that in one small town the average income is $34,200 with a stansard deviation of $2200. What percent of housholds between $29,800 and $38,600?
Find the sum of the positive and negative rank sums as in a Wilcoxon signed-rank test.
50.0 mL of water are placed in a calorimeter. When 15.0 g of ice are added to the calorimeter, the temperature drops from 70.0 C to51.2 C. Calculate the heat of fusion of ice in kJ/g, and inkJ/mol
Let A, B, and C be independent random variables, uniformly distributed over [0,4], [0,3], and [0,6] respectively. What is the probability that both roots of the equation Ax2+Bx+C=0 are real?
Why is it that a solution of sodium dichromate in sulfuric acid is perfect to oxidize a secondary alcohol to a ketone...is it equally good a reagent for the oxidation of a primary alcohol to a aldehyde (are there better available?)
A zero-order reaction has a constant rate of 1.60*10-4M/s. if after 40.0s the concentration has dropped to1.00*10-2 M, what is the initial concentration?
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