in a chemical reaction, theconcentration of a certain solution decreases by 20% every 100 secondes. if the solutions concentration is now 1 mole per liter, what will its concentration become 300 seconds from now, in mole per liter?

Suppose you want just guess at the answers in a 5 question multiple-choice test. each question has 3 responses and only one is correct. what is the probability of getting two questions right just guessing? 20 points 0.3275 0.2753 0.7532 none of the above

What does the relationship between the mean and median reveal about the shape of the data

Identify the expression equivalent to 4(x + x + 7) − 2x + 8 − 4 by substituting x = 1 and x = 2.