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miv72 [106K]
2 years ago
15

Most of the elements of which region of the periodic table are located directly to the right of the metaloids?

Chemistry
2 answers:
svetlana [45]2 years ago
7 0

Answer:

B. Nonmetals

Explanation:

Metalloids are elements that have properties that are intermediate between metals and nonmetals, these elements are heat and electricity semiconductors

This means that, generally, metalloids are better conductors of heat and electricity than nonmetals, but not as much as metals.

In the periodic table the metalloids are found diagonally from boron to polonium. The elements that are on the upper right are nonmetals, and those that are on the lower left are metals

Serggg [28]2 years ago
3 0
Non metals is the answer
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If the outside of your flask is not dry when the first mass determination is made and it is dried for the second mass determinat
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Answer:

You'll experience a grater deviation

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Tomato juice has a pH of 4.20. Calculate the [H3O+] and [OH–] in tomato juice.
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A chemist must prepare 300.0mL of nitric acid solution with a pH of 0.70 at 25°C. He will do this in three steps: Fill a 300.0mL
d1i1m1o1n [39]

<u>Answer:</u> The volume of concentrated solution required is 9.95 mL

<u>Explanation:</u>

To calculate the pH of the solution, we use the equation:

pH=-\log[H^+]

We are given:

pH = 0.70

Putting values in above equation, we get:

0.70=-\log[H^+]

[H^+]=10^{-0.70}=0.199M

1 mole of nitric acid produces 1 mole of hydrogen ions and 1 mole of nitrate ions.

Molarity of nitric acid = 0.199 M

To calculate the volume of the concentrated solution, we use the equation:

M_1V_1=M_2V_2

where,

M_1\text{ and }V_1 are the molarity and volume of the concentrated nitric acid solution

M_2\text{ and }V_2 are the molarity and volume of diluted nitric acid solution

We are given:

M_1=7.0M\\V_1=?mL\\M_2=0.199M\\V_2=350mL

Putting values in above equation, we get:

7.0\times V_1=0.199\times 350.0\\\\V_1=\frac{0.199\times 350}{7.0}=9.95mL

Hence, the volume of concentrated solution required is 9.95 mL

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2 years ago
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