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vodomira [7]
3 years ago
10

If the area of a square is 81 square meters, how many meters long is each side

Chemistry
1 answer:
Anarel [89]3 years ago
8 0
Area is length times width, so you would want to undo that. Since this is a square and the sides are equal, you would find the square root of 81 which is 9. Each side of the square is 9 meters
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To a 0.0001 m solution of mg(no3)2, naoh was added to a final concentration of 0.001m did a precipitate form?
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I looked on a solubility chart to answer this question, and hydroxides are generally insoluble (with some exceptions of course). However, it says to consider Mg(OH)_{2} as an insoluble substance, though it may be moderately soluble.


The answer that you are most likely looking for is: Yes, a precipitate does form - this is due to the double placement reaction:


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7 0
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VashaNatasha [74]

Answer:

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Explanation:

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Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.  The number 6.022 × 10²³ is called Avogadro number.

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Mass of gold:

Mass = number of moles × molar mass

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Mass = 114.26 g

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