2 years ago

What energy is formed when you put your hands together and rub them up and down rapidly

2 answers:

6 0

Your answer should be heat energy!

6 0

Answer:

When you rub your hands together thats mechanical energy. Once you hands warm up its heat energy.

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NNADVOKAT [17]

The average speed is 160 meters a minute.

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3 years ago

harkovskaia [24]

Answer:

$1.41 *10^{3} kJ/mol$

Explanation:

First, we find in the tables the ΔH of formation of each compound. As you can see in the (image 1)

Then we solve the ecuation for ΔH°reaction

ΔH°reaction=∑ΔH°f(products)−∑ΔH°f(Reactants)

ΔH°reaction= (-2* 393.5 - 2*285.8) - (52.4 + 0) kJ/mol

ΔH°reaction = -1.41 *10^3 kJ/mol

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3 years ago

tatiyna

Answer:

I hope this helps

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2 years ago

Dmitry [639]

The color changes, heat change, smell change, are a few

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3 years ago

Alik [6]

I'm not sure what it asks, but it answers

how many protons are in the nucleus
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where it sits in the periodic table
If the periodic table is divided in the modern way, it gives a good indicator of whether you are speaking about a metal, a non metal or neither.

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3 years ago