A culture of bacteria is put in a petri dish and doubles every 4 hours. a) If the initial amount of bacteria is 100, how many bacteria will there be in 15 hours? (Round to the nearest whole number.) b) When will the bacteria count be 350,000?

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.