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aev [14]
4 years ago
8

What are some renewable energy sources​

Chemistry
2 answers:
liraira [26]4 years ago
4 0
Wind, solar, biomass, hydropower
Feliz [49]4 years ago
3 0

Answer:

Wind energy - using wind to drive a turbine

Solar energy - using the sun to provide energy

Geothermal - using heat from the heated rock below the earth

Hydroelectric - using flowing rivers to drive turbines

Tidal energy - using tides to drive turbines

Wave energy - using natural waves to drive turbines

Bioenergy - using heat from biomass

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A student measures the mass of a substance as 1.7132 kg and it’s volume as 0.65 L. What is the density of the substance in g/mL?
7nadin3 [17]

Answer:

\rho =2.6g/mL

Explanation:

Hello,

In this case, considering that the density is defined as:

\rho =\frac{m}{V}

Thus, since 1 kg equals 1000 g and 1 L equal 1000 mL, the required density in g/mL turns out:

\rho =\frac{1.7132kg}{0.65L}*\frac{1000g}{1kg}*\frac{1L}{1000mL}   \\\\\rho=2.6g/mL

Take into account that since 0.65 L has two significant figures, the result is also shown with two significant figures.

Regards.

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