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3 years ago

Oil is more dense than water. How will this affect the weight of objects that will float on it?

1 answer:

3 0

Oil is more dense than alcohol, but less dense than water. The molecules that make up the oil are larger than those that that make up water, so they cannot pack as tightly together as the water molecules can. They take up more space per unit area and are less dense.

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What is the mass of an aluminum cylinder with 0.234 in diameter and a length of 2.697

Lemur [1.5K]

0.33g

Explanation:

Given parameters:

Diameter of cylinder = 0.234cm

length = 2.697cm

unknown:

mass of the cylinder = ?

Solution:

To solve this problem, we know that density of the aluminium can be determined and it is a constant.

Density is the mass per unit volume of a substance

Density = $\frac{mass}{volume}$

Mass of the cylinder = density x volume

To calculate the volume of cylinder;

Volume = π r² h

radius of the cylinder = $\frac{0.234}{2}$ = 0.12cm

Volume = 3.142 x 0.12² x 2.697 = 0.12cm³

Density of aluminium = 2.7g/cm³

Mass of the cylinder = 0.12 x 2.7 = 0.33g

learn more:

Density brainly.com/question/2690299

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4 years ago

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Black_prince [1.1K]

Answer:

A compound contains atoms of different elements chemically combined together in a fixed ratio. An element is a pure chemical substance made of same type of atom.

Explanation:

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4 years ago

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frez [133]

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If 4.00 moles of a gas at a pressure of 5.40 atm have a volume of 120 litres, what is the temperature?

xz_007 [3.2K]

Here's how you solve this:

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3 years ago