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To calculate density, you need both mass and volume. If the volume of the object is not provided, the density cannot be determined.
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The density is calculated by dividing the mass of an object by its volume. In this case, the density is 11.29 g/cm3 (79 g ÷ 7 cm3 = 11.29 g/cm3).
The density of water is approximately 1 gram per milliliter. Therefore, in 7 ml of water, there would be 7 grams of water.
The density of a battery can vary depending on its chemistry and design, but typical values range from 1.3 to 2.0 grams per cubic centimeter.
The number of cc in 10 grams of powder depends on the density of the powder. You would need to know the density of the powder in order to convert grams to cc. The formula to convert grams to cc is: cc = grams ÷ density.