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Tanya [424]
3 years ago
11

During a science investigation, a sample of matter breaks down into two kinds of atoms. Was the original sample an element or a

compound? Explain.
Chemistry
1 answer:
nevsk [136]3 years ago
3 0
The original sample was a compound because it was composed of two different elements and was not purely one element
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Energy is transferred between the earths surface and atmosphere.Energy move place to place

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State what happens to the potential energy of a the substance during the interval BC *
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The potential energy decreases whereas the kinetic energy increases.

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Given 16.2 grams of substance Y, if the substance absorbs 2722 joules of energy and the specific heat of the substance is 9.22 J
snow_tiger [21]
Since the substance absorbs heat, it is expected that the temperature will rise. The formula for the internal energy of a substance is given by the equation:

ΔU = mCpΔT

where:

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3 years ago
What is the pOH of a solution with [OH'] = 9,0 x 10-7?
bearhunter [10]

Answer: D (6.04) is the best answer

Explanation:

pOH = - log [OH⁻]

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6 0
3 years ago
a flask contains 2 gases. the first gas has a pressure of 0.76 atm and the second gas gas a pressure of 4,500 Pa. what is the to
Liula [17]

Answer:

The total pressure is 0,804 atm

Explanation:

We use Dalton's law according to which the sum of the partial pressures is equal to the total pressure of a gas mixture. We convert the pressure in Pascals to atmosphere (it can also be done in reverse):

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4 0
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