How to do metric unit conversions

1 answer:

4 0

For metric unit conversions, figure out if you are going to go from a smaller measurement to a larger one, and vice versa. for small to large, divide by 10, 100, 1000 depending on how much different they are. ex 987 cm = 98.7 dm.
for large to small, multiply by 10,100, or 1000 depending. ex 987 km = 9870 hm.

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A graduated cylinder has a mass of 50 g when empty. When 30 mL of water is added, the graduated cylinder has a mass of 120 g. If

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Answer:

2.9g/cm^3

Explanation:

We're given that the mass of the system before the rock was added was

120g . The mass after the rock was added was 250g, so the rock's mass is 130g.

The initial volume of water in the graduated cylinder was

30 mL , and the volume after the rock was added read 75mL , so the rock's volume is 45mL

Density = Mass over Volume.

AKA. 130g/45mL

2.9g/cm^3 (rounded)

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