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Nadya [2.5K]
3 years ago
8

1) Copper oxide and carbon combine to produce metallic copper. Which of these is the balanced equation for this reaction?

Chemistry
1 answer:
Goshia [24]3 years ago
5 0
The answer to your question is B
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An ideal gas in a cylindrical container of radius r and height h is kept at constant pressure p. The bottom of the container is
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Answer:

m =\frac{p*(pi)*r^{2}*h*mw}{R*\frac{T_{1} + T_{O}}{2}}  

Explanation:

The gas ideal law is  

PV= nRT (equation 1)

Where:

P = pressure  

R = gas constant  

T = temperature  

n= moles of substance  

V = volume  

Working with equation 1 we can get  

n =\frac{PV}{RT}

The number of moles is mass (m) / molecular weight (mw). Replacing this value in the equation we get.

\frac{m}{mw} =\frac{PV}{RT}  or  

m =\frac{P*V*mw}{R*T}   (equation 2)

The cylindrical container has a constant pressure p  

The volume is the volume of a cylinder this is

V =(pi)*r^{2}*h

Where:

r = radius  

h = height  

(pi) = number pi (3.1415)

This cylinder has a radius, r and height, h so the volume is  V =(pi)*r^{2}*h

Since the temperatures has linear distribution, we can say that the temperature in the cylinder is the average between the temperature in the top and in the bottom of the cylinder. This is:  

T =\frac{T_{1} + T_{O}}{2}  

Replacing these values in the equation 2 we get:

m =\frac{P*V*mw}{R*T}   (equation 2)

m =\frac{p*(pi)*r^{2}*h*mw}{R*\frac{T_{1} + T_{O}}{2}}    

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Which statement best describes the relationship between the substances in the equation
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The number of sodium ions is equal to the number of formula units of salt.

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How many molecules of O2 are there in 2.0 moles of oxygen?
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28 molecul are in mol of ox
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Besides genetics, what other factors are responsible for<br> how you will grow and develop?
White raven [17]

Answer:

D

Explanation:

It depend on your parents genes. What they have, is what you'll have.

~<em>Jack Pullman</em>

p.s. Mark for brainiest!

6 0
3 years ago
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