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3 years ago

7

If your front yard is 16.0 feet wide and 20.0 feet long, and each square foot of lawn accumulates 1250 new snowflakes every minu

te, how much snow (in kilograms) accumulates on your lawn per hour? Assume an average snowflake has a mass of 2.00 mg.

1 answer:

Free_Kalibri [48]3 years ago

3 0

I think the answer is 3x-x+2=4

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4 years ago

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4 years ago

Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 8.60 MJ o

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Answer: $64.216\times 10^4grams$ of liquid sodium is required.

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$q=nc\Delta T\\q=\frac{m}{M}c\Delta T$

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q = heat required, $8.60MJ=8.60\times 10^6J$ (Conversion factor: 1MJ = 1000000J)

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M = Molar mass of liquid sodium, $23g/mol$

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Putting values in above equation, we get:

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3 years ago

an atom of element Y has an electronic structure of 2.8.5. Would the element Y be a metal or non-metal? Explain your answer

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4 years ago