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Contact [7]
3 years ago
12

An object resting on a table weighs 100 N. With what force is the object pushing on the table? With what force is the table push

ing on the object? Explain how you got your answer.
Chemistry
1 answer:
Marina86 [1]3 years ago
4 0

<u>Answer:</u> The force that the table is applying on the object will be 100 N.

<u>Explanation:</u>

We are given that ab object is applying a 100 N of force on the resting table and we need to find the force that the table is applying on the object. To find that we will follow Newton's Third Law, which states that:

For every action, there is an equal and opposite reaction.

This law means that for every interaction, two equal forces are acting on both the interacting objects in opposite direction.

Hence, the force that the table is applying on the object will be 100 N.

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When aluminum is placed in concentrated hydrochloric acid, hydrogen gas is produced. 2 Al ( s ) + 6 HCl ( aq ) ⟶ 2AlCl3 ( aq ) +
Rufina [12.5K]

Answer:

The answer to your question is  V = 19.9 L

Explanation:

Data

mass of Al = 8.60 g

volume of H₂ = ?

Balanced chemical reaction

                 2Al  +  6HCl  ⇒   2AlCl₃  +  3H₂

1.- Use proportions to calculate the mass of H₂ produced

Atomic mass of Al = 2 x 27 = 54 g

Atomic mass of H₂ = 6 x 1 = 6 g

                54 g of Al -------------------- 6 g of H₂

                  8 g  of Al -------------------  x

                  x = (8 x 6) / 54

                  x = 48 / 54

                  x = 0.89 g of H₂

2.- Calculate the volume of H₂

- Convert the H₂ to moles

                    1 g of H₂ --------------- 1 mol

                   0.89 g    ---------------- x

                    x = 0.89 moles

                    1 mol of H₂ -------------- 22.4 l

                   0.89 moles  ------------- x

                    x = (0.89 x 22.4) / 1

                   x = 19.9 L                        

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