Astandard deck of 52 playing cards contains 13 cards in each of four suits: diamonds, hearts, clubs, and spades. two cards are chosen from the deck at random. what is the approximate probability of choosing one club and one heart?

The probability is 25% because the deck is divided into 4 parts which makes it 25% probability of choosing a club or a heart.

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.

21/2 or 5/2