Xavier boiled 45 grams of water. if all of the water changed into a gas, what would be the weight of the water vapor?

45 g

Explanation:

Conservation of matter.

I’m not entirely sure about what you’re asking but chargaff’s rule is the thing that states that the amount of each “letter” in DNA is equal to its pair. Guanine (g) pairs with cytosine (C) and the same with adenine(A) and thymine (T). I’m sorry my answer is so vague, but I hope it helps a little!