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4 years ago

Which of the following are steps for balancing chemical equations?

Physics

1 answer:

AveGali [126]4 years ago

5 0

Answer:

C. Recheck the numbers of each atom on each side of the equation

to make sure the sides are equal.

D. Choose coefficients that will balance the equation

Explanation:

In balancing of chemical equation, the number of atoms on both sides must be equal in adherence to the law of conservation of mass.

Using the method of inspection, the equation is first observed to know the relationship between the combining atoms and the resulting ones.

After observing the reaction, put a coefficient that will balance the equation. Then recheck the number of each atom on both side of the equation. One can repeat the process till the equation is balanced.

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4 years ago

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3 years ago

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3 years ago

You exert a 100-N force on a pulley system to lift 300-N. What is the mechanical advantage of this system? How many sections of

Andrei [34K]

Answer:

Mechanical advantage = 3

Explanation:

You exert a 100-N force on a pulley system to lift 300-N.

The mechanical advantage of the system is given by the ratio of output force to the input force.

Here, output force = 300 N and input force = 100 N

Mechanical advantage,

$m=\dfrac{300}{100}\\\\m=3$

Mechanical advantage is 3 it means that there are 3 sections of rope support. Hence, this is the required solution.

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3 years ago