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mafiozo [28]
3 years ago
8

Use the following equation to determine the charge on iron when it dissociates from oxygen and determine whether it is being oxi

dized or reduced:
Fe2O3 + 3CO -> 2Fe + 3CO2


A. It starts with a charge of +3 and is reduced.
B. It starts with a charge of +2 and is reduced.
C. It starts with a charge of -2 and is oxidized.
D. It starts with a charge of -3 and is oxidized.
Chemistry
1 answer:
kumpel [21]3 years ago
8 0

The correct answer is A. Brainliest would be much appreciated.

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andre [41]

Answer:

Explanation:

34. E

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How many grams of potassium chloride are needed to make 100 ml of a solution containing 250 mosmol/l? (m.w. of potassium is 39 a
LUCKY_DIMON [66]
In dilute solutions, the unit osmolarity is being used. It usually has units milliosmols per liter of solution or mOsmol/L. An osmole defines the number of moles of the solute that would have an effect on the osmotic pressure of the solution. Osmolarity is calculated by the product of the molarity and the number of particles in the solution which is 2 for potassium chloride. We calculate as follows:
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The words aa q.s. is an abbreviation which is used in pharmacy. This is usually written by prescribers and then translated by pharmacists. The aa is derived from Latin which means “of each” while q.s. is also derived from Latin which means “a sufficient quantity”. This simply means that there is equal amount of Hytone 1% cream and Lotrimin 1% cream in the total cream formulation.

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