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Kobotan [32]
3 years ago
12

Calculate the volume of a sample of iron that has a density of 6.8 g/mL and a mass of 6780 mg.

Chemistry
1 answer:
Veronika [31]3 years ago
8 0

Answer:

m= 6780mg = 6.78g = 6.8g

d= 6.8g/ml

V= m/d

V= 1ml

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3 years ago
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Calculate the number of calories needed to increase the temperature of 50.0 g of copper metal from 21.0 degrees C to 75.0 degree
KonstantinChe [14]
<h3>Answer:</h3>

1031.4 Calories.

<h3>Explanation:</h3>

We are given;

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Quantity of heat is given by the formula,

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3 years ago
The purpose of a machine is to decrease the work needed. TRUE/FALSE
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Answer:

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Q.1-

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Explanation:

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3 years ago
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