If you pick a gumball at random, put it back, and then pick another gumball at random, what is the probability of picking a blue gumball then picking a yellow gum ball? a) 1/25 b) 1/50 c)3/100 d) 3/10 there are two blues, one yellow, one white, one orange, two red, one pink, one purple, one green

The answer is B) 1/50

Probability of picking Blue-2/10 which is 1/5

Probability of picking Yellow-1/10

1/5x1/10=1/50

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.