Many household cleaners, particularly toilet cleaners and some drain cleaners have acid in them. this is the equation representing hydrochloric acid plus bleach. naclo + 2 hcl →cl2 + h2o + nacl if you mix bleach with acidic cleanser, a very noxious gas that can cause respiratory problems will be released. your sense of smell can detect this gas in air at concentrations as low as 0.08 parts per million and at that level, it is basically an irritant. levels as low as 15 parts per million can cause severe throat irritation while levels of 50 parts per million or above are very dangerous. what is this gas?

What is tan(61)? а. 1.80 b. 0.49 c. 0.61 d. 0.87

The rigid beam is supported by the three suspender bars. bars ab and ef are made of aluminum and bar cd is made of steel. if each bar has a cross-sectional area of 450 mm2, determine the maximum value of p if the allowable stress is (σallow)st = 200 mpa for the steel and ( σallow)al = 150 mpa for the aluminum. est = 200 gpa and eal = 70 gpa.

Explain the difference between each pair of concepts. a. frequency and relative frequency b. percentage and relative frequency a. select the correct choice below. a. frequency is the total number of observations in a data set. relative frequency is the number of times a particular distinct value occurs. b. frequency is the number of times a particular distinct value occurs. relative frequency is the ratio of the frequency of a value to the total number of observations. c. frequency is the total number of observations in a data set. relative frequency is the ratio of the number of times a particular distinct value occurs to the frequency. d. frequency is the number of times a particular distinct value occurs. relative frequency is the ratio of the frequency of two different values.