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barxatty [35]
3 years ago
7

Benefits of using n2o as a refrigerant.

Chemistry
1 answer:
Murrr4er [49]3 years ago
5 0
Mexican Texas<span> is the historiographical name used to refer to the era of </span>Texan<span> history between 1821 and 1836, </span>when it was part<span> of </span>Mexico<span>. </span>Mexico gained independence<span> from Spain in 1821 in </span>its war<span> of</span>independence<span>. Initially, </span>Mexican Texas<span> operated very similarly to Spanish </span>Texas<span>.</span>
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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.

5 0
3 years ago
Which of the following elements has the highest electronegativity? hydrogen carbon chlorine fluorine
sergey [27]
The most eletronegative elements are to the right of the periodic table. The electronegativities increase as you move right.

Fluorine and Chlorine are the highest.

Fluorine is 4.0
Chlorine is 3.0

Fluorine is the answer.
6 0
3 years ago
Q05 the "atomic number" of an atom is determined by the number of ________ it has.
Alexxx [7]
The atomic number of an atom is determined by the number of protons it has..

It is also the whole number shown on the periodic table 
6 0
3 years ago
Plz help im begging
vladimir2022 [97]

Answer:

A. glass and diamond

Explanation:

7 0
3 years ago
How many moles of nitroglycerin were in the container originally?
Gemiola [76]

Answer:

4.75

Explanation:

I hope this helped!

7 0
2 years ago
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