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Aneli [31]
2 years ago
7

Which of the following changes can alter the form of a substance but does not necessarily change it to the other substance?

Chemistry
1 answer:
zheka24 [161]2 years ago
5 0

D - by undergoing all of these changes you would still be left with the same substance

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rosijanka [135]

Answer:b

Explanation:

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3 years ago
a 22.44g sample of iron absorbs 180.8 J of heat, upon which the temperature of the sample increases from 21.1C to 39.0/ what is
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Answer:

The specific heat of iron is 0.45 J/g.°C

Explanation:

The amount of heat absorbed by the metal is given by:

heat = m x Sh x ΔT

From the data, we have:

heat = 180.8 J

mass = m = 22.44 g

ΔT = Final temperature - Initial temperature = 39.0°C - 21.1 °C = 17.9°C

Thus, we calculate the specific heat of iron (Sh) as follows:

Sh = heat/(m x ΔT)  = (180.8 J)/(22.44 g x 17.9°C) = 0.45 J/g.°C

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2 years ago
Blood, trail mix, and salad are all examples of ______________.
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Answer:

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asambeis [7]

The term Big Bang defines that the Universe has expanded from the ancient hot and thick primary situation at some fixed time in the past.

Big Bang theory refers to the origin of the Universe. In the beginning, universe is very heavy and small hot ball of matter. It was a point no bigger than the head of a pin when all the things squished with each other and universe is expanded with huge explosion of energy. Due to expansion, it is cooled and results in the formation of Stars and galaxies. After sometime, atoms formed like helium and hydrogen.

Thus, statement (1), (3) and (4) is correct whereas statement (2) and (5) is incorrect.

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6CO2 + 6H2O → C6H12O6 + 6O2

glucose produced = 1/6 x 23.6 = 3.93 moles

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2 years ago
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