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3 years ago

Do the same molecules have to be present on both sides of a chemical equation? why or why not?

1 answer:

Nadusha1986 [10]3 years ago

7 0

Yes, the same molecules have to be present on both sides of a chemical equation. This is because the equation has to be able to be balanced, and without the same amount of each molecule on each side of the equation, it could not be balanced.

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Which theory best explains the present arrangement of continents oceans and landforms on earth? A the Pangaea theory B The conti

solong [7]

Plate Tectonic Theory

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3 years ago

Cual de las escalas de temperatura es la mas antigua

IrinaVladis [17]

Answer:

the translation I got for this question is

Which of the temperature scales is the oldest?

Explanation:

and i searched for it and got this=

Fahrenheit scale

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2 years ago

Walt ran 5 kilometers in 25 minutes going eastward what is his average velocity

Alex777 [14]

Answer:

1/5 km/min

Explanation:

the formula for velocity is distance/time

so if i plug in the distance and time i get 5/25 or 1/5

Hope this helps!

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3 years ago

In this problem, you will practice applying this formula to several situations involving angular acceleration. In all of these s

riadik2000 [5.3K]

Answer:

Part a)

$\alpha = \frac{2(m_1 - m_2)g}{(m_1 + m_2)L}$

Part b)

$\alpha = \frac{6(m1 - m_2)g}{3(m_1 + m_2)L + m_{bar}L}$

Explanation:

As we know that the see saw bar is massless so here torque due to two masses is given as

$\tau = I\alpha$

here we will have

$\tau = (m_1g - m_2g)(\frac{L}{2})$

now we will have inertia of two masses given as

$I = (m_1 + m_2)(\frac{L}{2})^2$

now we have

$I = (m_1 + m_2)\frac{L^2}{4}$

now the angular acceleration is given as

$\alpha = \frac{\tau}{I}$

so we have

$\alpha = \frac{2(m_1 - m_2)g}{(m_1 + m_2)L}$

Part b)

Now if the rod is not massles then we will have total inertia given as

$I = (m_1 + m_2)(\frac{L}{2})^2 + \frac{m_{bar}L^2}{12}$

so we will have

$I = (m_1 + m_2)\frac{L^2}{4} + \frac{m_{bar}L^2}{12}$

now the acceleration is given as

$\alpha = \frac{\tau}{I}$

$\alpha = \frac{6(m1 - m_2)g}{3(m_1 + m_2)L + m_{bar}L}$

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3 years ago

What is a oxidation number

Scilla [17]

Oxidation number is the charge.

6 0

3 years ago

Read 2 more answers