What percentage of the electricity used in the United States is produced by hydroelectric power plants?

1 answer:

6 0

13% of total energy ( net energy ) is obtained from renewable sources and about 46% of it comes from hydroelectric power plants.

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Calculate the mass (g) of 1.5 moles of Sulfur.

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Answer:

48 g S

Explanation:

Step 1: Define

Molar Mass of Sulfur (S) - 32.07 g/mol

Step 2: Use Dimensional Analysis

$1.5 \hspace{3} mol \hspace{3} S(\frac{32.07 \hspace{3} g \hspace{3} S}{1 \hspace{3} mol \hspace{3} S} )$ = 48.105 g S

Step 3: Simplify

We have 2 sig figs.

48.105 g S ≈ 48 g S

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The speed of light in a vacuum is 2.998 × 10 8 8 m/s. How long does it take for light to circumnavigate the Earth, which has a c

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