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Furkat [3]
4 years ago
12

Every day, about 1 4 0 , 0 0 0 , 0 0 0 140,000,000140, comma, 000, comma, 000 plastic water bottles are bought in the United Sta

tes. Each bottle is about 0 . 2 5 0.250, point, 25 meters long, and the equator of the Earth is about 4 0 , 0 0 0 , 0 0 0 40,000,00040, comma, 000, comma, 000 meters around. How many times can the Earth's equator be circled by a line of plastic bottles used in the United States every day?
Chemistry
1 answer:
jeka944 years ago
8 0

Answer:

0.875 time.

Explanation:

The length of plastic water bottles are bought in the United States every day = (the no. of plastic water bottles are bought every day)(length of each bottle) = (140.0 million bottle)(0.25 m) = 35.0 million meter.

The length of the equator of the earth = 40.0 million meter.

∴ The times can the Earth's equator be circled by a line of plastic bottles used in the United States every day = (The length of plastic water bottles are bought in the United States every day)/(The length of the equator of the earth) = (35.0 million meter)/(40.0 million meter) = 0.875 times.

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<u>Answer:</u> The moles of given hydrocarbon is 0.3 moles

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To calculate the number of moles, we use the equation:

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We are given:

Given mass of ethane = 10.0 g

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We need to divide the given value by the molar mass.

Putting values in above equation, we get:

\text{Moles of ethane}=\frac{10.0g}{30g/mol}=0.3mol

In case of multiplication and division, the number of significant digits is taken from the value which has least precise significant digits. Here, the least precise number of significant digits are 1.

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3 years ago
Sodium chloride appearance and state at 25°?​
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Explanation:

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The new fisher population have to develop a wide range of strategies to satisfy its carnivorous instincts.

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