3 years ago

Is Aushtin dating Summer please help

Chemistry

2 answers:

Sidana [21]3 years ago

6 0

Huh? What’s this about ?

Sloan [31]3 years ago

4 0

Answer:

uhm yes he made her pump go off

Explanation:

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If an atom has 22 protons 28 neutrons 20 electrons what would its atomic number be

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Answer:

Explanation:

The atomic number indicates the amount of protons, so it would be 22

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3 years ago

Mayonnaise is made up of eggs, oil, and vinegar. Under which category it should be classified?

slamgirl [31]

It is under the category fats! I hope this helps!

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1. what part (or parts) of the system store potential energy?

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3 years ago

The cylinder of aluminum in class was approximately 13mm in circumference and 42mm in length. What would be it's approximate mas

Roman55 [17]

Answer:

Mass, m = 1.51 grams

Explanation:

It is given that,

The circumference of Aluminium cylinder, C = 13 mm = 1.3 cm

Length of the cylinder, h = 4.2 cm

We know that the density of the Aluminium is 2.7 g/cm³

Circumference, C = 2πr

$r=\dfrac{C}{2\pi}\\\\r=\dfrac{1.3}{2\pi}\\\\r=0.206\ cm$

Density is equal to mass per unit volume.

$d=\dfrac{m}{V}$

m is mass of the cylinder

V is the volume of the cylinder

$V=\pi r^2h\\\\V=\dfrac{22}{7}\times0.206^2\times 4.2\\\\V=0.5601\ cm^3$

So,

$m=d\times V\\\\m=2.7\times 0.5601\\\\m=1.51\ g$

So, the mass of the cylinder is 1.51 grams.

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4 years ago

Which statements describe how heat flows in foil? Check all that apply. Heat flows in all directions. Heat flows from left to ri

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Answer:

A D F

Explanation:

Its right but its not in order But its A D and F

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