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Allushta [10]
3 years ago
7

What is cement and who invented it?

Chemistry
1 answer:
Sonja [21]3 years ago
5 0

Answer:

Cement is a combination of calcium, silicone, aluminum, iron and lots of other ingredients to make side walks, home made crafts, etc. The person who invented concrete is Joseph Aspdin.

Explanation:

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Alex17521 [72]
No, they can have potential energy
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3 years ago
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A 365 L balloon is blown up inside at 283 K. It is then taken outside in the hot sun and Heated to 300K. What is the new volume?
asambeis [7]

V₁ = initial Volume of the balloon after it is blown up = 365 L

V₂ = new Volume of the balloon after it is taken outside = ?

T₁ = initial temperature of the balloon = 283 K

T₂ = new temperature of the balloon = 300 K

using the equation

V₁/V₂ = T₁/T₂

365/V₂ = 283/300

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6 0
3 years ago
The experimental group is the group that is left alone during the experiment
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The given statement is false.

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Verizon [17]
94 protons and 145 neutrons
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I don’t understand the equations
inna [77]
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