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Rzqust [24]
3 years ago
5

What is the value of work done on an object when a 50–newton force moves it 15 meters in the same direction as the force?

Chemistry
1 answer:
victus00 [196]3 years ago
7 0

Answer:

work done = 750 J

Explanation:

Given data:

Force on object = 50 N

Distance covered = 15 m

Work done = ?

Solution:

W = F. d

W = work done

F = force

d = distance

Now we will put the values in formula.

W = 50 N × 15 m

W = 750 N. m = 750 J

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How many moles of oxygen are required to react completely with 5 mol C8H18?
Nata [24]

Answer:

62.5 moles of O₂.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

2C₈H₁₈ + 25O₂ —> 16CO₂ + 18H₂O

From the balanced equation above,

2 moles of C₈H₁₈ reacted with 25 moles of O₂.

Finally, we shall determine the number of mole of O₂ needed to react with 5 moles of C₈H₁₈. This can be obtained as shown below:

From the balanced equation above,

2 moles of C₈H₁₈ reacted with 25 moles of O₂.

Therefore, 5 moles of C₈H₁₈ will react with = (5 × 25) / 2 = 62.5 moles of O₂.

Thus, 62.5 moles of O₂ is needed for the reaction.

6 0
3 years ago
A cube is 4 cm on each side. What is its volume?<br><br> Answer: 64cm^3
Anit [1.1K]

Answer:

yeah

Explanation:

5 0
3 years ago
Which of the following pairs of elements is most likely to form an ionic compound? a oxygen and fluorine b sodium and aluminum c
irina [24]

An ionic compound consists of a metal AND a non-metal.

<em>Option A:</em>

Oxygen and fluorine are non-metals.

<em>Option B:</em>

Sodium and aluminium are non-metals.

<em>Option C:</em>

Calcium is a metal and chlorine is a non-metal.

<em>Option D:</em>

Nitrogen and sulfur are non-metals.

Thus, the answer is C.

4 0
3 years ago
As the [H] In a solution decreases, what happens to the [OH-]?
valentinak56 [21]
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Dna contains the template needed to copy itself, but it has no catalytic activity in cells. what catalyzes the formation of phos
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I'm a bio major, hope I helped :)
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3 years ago
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