I would say that descriptive investigations aren't repeatable because it means that you are only describing something - you ask certain question about something, but do not form a hypothesis at that point yet. So it would be a waste of time to simply ask the same questions over and over again with no hypothesis to prove, which is why these types of investigations cannot be repeated.
Answer:
m = 49.8 g
Explanation:
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In this case, for this calorimetry processes we can define the involved heat in terms of mass, specific heat and temperature as shown below:
Thus, given the heat, final and initial temperature and specific heat of water (4.184), the mass of water can be computed as shown below:
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Answer:
About 71 percent of the Earth's surface is water-covered, and the oceans hold about 96.5 percent of all Earth's water. Water also exists in the air as water vapor, in rivers and lakes, in icecaps and glaciers
1 PART IS COVERED BY LAND AND 3 PART IS COVERED BY WATER
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