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yKpoI14uk [10]
3 years ago
14

Anyoneeee know thissss!?

Chemistry
1 answer:
Alekssandra [29.7K]3 years ago
3 0

Answer:

C. 3 and 4

Explanation:

Count H's in formula (each has 4)

- Hope that helped! Please let me know if you need a further explanation.

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Calculate the energy required to heat 322.0g of ethanol from −2.2°C to 19.6°C . Assume the specific heat capacity of ethanol und
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Answer:

There is 17.1 kJ energy required

Explanation:

Step 1: Data given

Mass of ethanol = 322.0 grams

Initial temperature = -2.2 °C = 273.15 -2.2 = 270.95K

Final temperature = 19.6 °C = 273.15 + 19.6 = 292.75 K

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Step 2: Calculate energy

Q = m*c*ΔT

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⇒ c = the specific heat capacity of ethanol = 2.44 J/g*K

⇒ ΔT = T2 - T1 = 292.75 - 270.95 = 21.8 K

Q = 322 * 2.44 * 21.8 = 17127.8 J = 17.1 kJ

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3 years ago
An element is a pure substance that is defined by the number of protons in which is defined as the atomic number
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If this is a true or false question then the answer is true.
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Is an apple seed a compound or a mixture?
vaieri [72.5K]

Answer:

Compound

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consider the substance:carbon dioxide, gold, bronze, alcohol, iron, and, oxygen.from the list , select the substances that :(1)
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Answer:

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Explanation:

 · Air decolorization makes use of chromophores’ instability on oxygen to decolorize the oil by air-oxidizing pigments. For example, the carotenoid and chlorophyll in the oil are very unstable because of their structure, which is easy to be discolored under the action of oxygen. However, air decolorization leads to thermal oxidation of the oil, too.

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3 years ago
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