Planet Earth has a mass of 1726 * 10 ^ 24 kilograms. And although 70% of the Earth's surface is made of water, the water's mass is only 5 * 10 ^ - 4 percent of the Earth's total massUse scientific notation to estimate the mass of the plane water In your final answer include all of your estimates and calculations .

16 minutes is correct

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.