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Contact [7]
3 years ago
13

The blades of a wind turbine are at rest until the movement of air causes the blades to spin.

Chemistry
1 answer:
Finger [1]3 years ago
8 0

Answer:

C

Explanation:

First there is no chemicals involved so cross out B and D. Wind turbines are made to create energy not to convert it so A is crossed out as well. The remaining answer is C.

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A 215-g sample of copper metal at some temperature is added to 26.6 g of water. The initial water temperature is 22.22 oC, and t
andrezito [222]

The initial temperature of the copper metal was 27.38 degrees.

Explanation:

Data given:

mass of the copper metal sample = 215 gram

mass of water = 26.6 grams

Initial temperature of water = 22.22 Degrees

Final temperature of water = 24.44 degrees

Specific heat capacity of water = 0.385 J/g°C

initial temperature of copper material , Ti=?

specific heat capacity of water = 4.186 joule/gram °C

from the principle of:

heat lost = heat gained

heat gained by water is given by:

q water = mcΔT

Putting the values in the equation:

qwater = 26.6 x 4.186 x (2.22)

qwater = 247.19 J

qcopper = 215 x 0.385 x (Ti-24.4)

              = 82.77Ti - 2019.71

Now heat lost by metal = heat gained by water

82.77Ti - 2019.71 = 247.19

Ti = 27.38 degrees

8 0
3 years ago
A chemical reaction which uses a molecule of water to break apart another molecule is most commonly called
Artyom0805 [142]

That is called hydrolysis.

4 0
3 years ago
How many moles of carbon dioxide (CO2) are in a 22 gram sample?
Anvisha [2.4K]

Answer:

0.5 mole

Explanation:

C=12u

O=16u

1 mole carbon dioxide=44 grams

so 22grams = 0.5 mole

6 0
2 years ago
What is nuclear medicine
Mumz [18]
The branch of medicine that deals with the use of radioactive substances in research, diagnosis, and treatment.
6 0
3 years ago
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If you dilute 250 mL of 6.4 M lithium acetate solution to a volume of 750 mL, what will the concentration of this solution be?
Tresset [83]
The answer would be 1006.4
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3 years ago
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