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11. Mercury is the only metal that occurs at the Earth's surface in liquid form. In fact, it has a density of 30 lbs/L. What is the density of mercury in kg/L? (Note: 1 lb = 0.454 kg) (show your work in the space below) A) 13.62 lbs/L B) 1.362 kg/L C) 136.2 kg/L D) 13.62 kg/L

User Anxhela
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Answer:

D) 13.62 kg/L

Step-by-step explanation:

This problem can be solved by a simple rule of three.

The problem states that Mercury has a dansy of 30 lbs/L, and asks what is the density in kg/L. We have to convert from lbs to kg.

Each lb has 0.454 kg? How many kg are there in 30 lbs?

So:

1 lb - 0.454kg

30 lb - x kg


x = 30(0.454)


x = 13.62

This means that mercury's density in kg/L is 13.62, letter D. Letter A is also 13.62, however it is not in the unit asked.

User Stefano Barbi
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