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emmasim [6.3K]
3 years ago
13

How does the area of the rectangle relate to the lengths of each side?

Chemistry
1 answer:
Fofino [41]3 years ago
7 0

Answer:

A = l×b

Explanation:

Rectangle is a closed figure with 4 vertices. Each angle of a rectangle is 90 degrees. The opposite sides of a rectangle are equal.

Let l is the length of opposite sides of a rectangle and b is the breadth of the opposite sides of a rectangle.

The area of a rectangle is then given by :

A = l×b

i.e. area of a rectangle is equal to length times breadth.

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How many molecules of ethane are present in 64.28 liters of ethane gas (C2H6) at STP
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Answer : The molecule of ethane present in 64.28 L of ethane gas at STP is, 17.277\times 10^{23} molecule.

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22.4 L volume of ethane present in 1 mole of ethane gas

64.28 L volume of ethane present in \frac{64.28L}{22.4L}\times 1mole=2.869moles of ethane gas

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1 mole of ethane molecule contains 6.022\times 10^{23} molecules of ethane

2.869 moles of ethane molecule contains 2.869\times 6.022\times 10^{23}=17.277\times 10^{23} molecules of ethane

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