All the water on the earth is the same water that has been here since
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Answer:
sound waves travel.faster through materials that are more dense
Answer:

Explanation:
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In this case, since at 60 °C, 108 grams of ammonium bromide are completely dissolved in 100 grams of water for a saturated solution, once it is cooled to 30 °C, wherein only 83.2 grams are completely dissolved in 100 grams of water, the following mass will precipitate:

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Im just guessing, so i think is A
Answer:
it's a D answer if it's wrong please can you understand my question please