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posledela
3 years ago
7

It the mass of a material is 46 grams and the volume of the material is 8 cm ^3 What would the density of the material to be

Chemistry
1 answer:
Nat2105 [25]3 years ago
3 0
5.75 Grams per cm^3

You do mass divided by volume
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A solution of pH 5 is diluted 100 times. Find the pH of the resulting solution.
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First, we calculate of the concentration of the H+ ions in the solution from the pH given. Then, calculate the new concentration after dilution. Calculation are as follows:

pH = -log[H+]
5 = -log[H+]
[H+] = 1 x 10^-5 M

M1V1 = M2V2
<span>1 x 10^-5 M (V1) = M2(100V1)
</span>M2 = 1 x 10^-7

pH =  -log[<span>1 x 10^-7</span>]
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Down a period, atomic radii decrease from left to right due to the increase in the number of protons and electrons across a period: when a proton is added the pull of the electrons towards the nucleus is larger, so the size of the atom decreases.

Hence, you can compare the elements that belong to a same period and predict that the atom with lower atomic number (number of protons) will haver larger atomic radius. With that:

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So far, you can rank the atomic radius of sulfur, chlorine, fluorine, and oxygen, in increasing order as:

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