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wlad13 [49]
3 years ago
11

What mineral element present in a bridge​

Chemistry
1 answer:
OLga [1]3 years ago
3 0
A mineral found in a bridge is iron
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When a 120g sample of aluminum absorbs 9612 J of energy its temperature increases from 298K to 388K. Find the specific heat of t
Iteru [2.4K]

Specific heat of Aluminium is 0.89 g/J

Explanation:

Step  1 :

Specific heat of a substance is the energy absorbed by a substance of unit mass when its temperature increases by one degree.

Energy Absorbed = Specific Heat * Mass of the substance * Temperature Difference

Step  2 :

It is given that 120 g sample absorbs 9612 J energy when the temperature increases from 298K to 388K.

Temperature Difference = 388 K - 298 K = 90 K

Step  3:

Specific Heat = (Energy Absorbed) ÷ (Mass of the substance * Temperature Difference)

Specific Heat = 9612 ÷  (120 * 90) = 0.89 grams / Joule

Step  4:

Answer:

Specific heat of Aluminium is 0.89 g/J

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4 years ago
Why must oxidation be accompanied by a reduction?
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Answer:

A

Explanation:

because the species being oxidized shares electrons with the species that is reduced.making the oxidized element positively charged and the reduced element negatively charged.

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Arrange the following atoms in order of increasing effective nuclear charge experienced by the electrons in the n=3 electron she
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