Someone please help will mark as brainliest
1 answer:
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<u>Answer:</u>
<u>For a:</u> The density of the sample of copper is
<u>For b:</u> The volume of ethanol needed is 19.0 mL
<u>For c:</u> The mass of mercury is 340. grams
<u>Explanation:</u>
To calculate density of a substance, we use the equation:
......(1)
- <u>For a:</u>
Mass of copper = 374.5 g
Volume of copper =
Putting values in equation 1, we get:
Hence, the density of the sample of copper is
- <u>For b:</u>
Mass of ethanol = 15.0 g
Density of ethanol = 0.789 g/mL
Putting values in equation 1, we get:
Hence, the volume of ethanol needed is 19.0 mL
- <u>For c:</u>
Volume of mercury = 25.0 mL
Density of mercury = 13.6 g/mL
Putting values in equation 1, we get:
Hence, the mass of mercury is 340. grams