What is the pH of 0.721 M ethylamine (C2H5NH2) at 25 oC?

Consider a saturated solution of MCl3 with a molar solubility of 0.18 M. What do you expect to see when you add 0.1 M NaCl to the solution (assume that there is no change in volume) The reaction will shift left The reaction will shift right The reaction will not be affected As a result of which The molar solubility will increase The molar solubility will decrease The molar solubility will remain unchanged

Determine if the following statements are true or false: NaBr is an acidic salt [1] KIO is a basic salt [2] C2H5NH3Br is an acidic salt [3]

My QC project is due in D2L on April 23rd by 11:59pm. Mrs. R will dock heavy points if it is late. 

A charity is selling $3 raffle tickets as part of a fund-raising program. The first prize is valued at $200, the second prize is valued at $50, and three additional prizes are valued at $20 each. If 500 tickets are sold, what is the expected value of purchasing a raffle ticket?

Accoding to a 1992 study, adult body temperatures are normally distributed with a mean of 98.20⁰ F and a standard deviation of 0.73⁰ F. What is the standard deviation of the sampling distribution of sample mean body temperatures for samples of 25 adults?

A jar contains 8 blue marbles, 5 green marbles, and 7 yellow marbles. Three marbles are randomly selected from the jar without replacement. What is the probability that all three of the selected marbles are green? 

A jar contains 8 blue marbles, 5 green marbles, and 7 yellow marbles. Three marbles are randomly selected from the jar without replacement. What is the probability that exactly one of the selected marbles is blue? 

According to a Pew Research Center survey, 30% of American adults have used an online dating site. Six American adults are randomly selected and asked if they have used an online dating site. What is the probability that more than 2 have used an online dating site? 

According to a Pew Research Center survey, 30% of American adults have used an online dating site. Six American adults are randomly selected and asked if they have used an online dating site. What is the standard deviation of the number who have used an online dating site for random samples of six American adults?