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2 years ago

Calculate the Volume of an object with dimensions measuring 22m x 15mm x 2.0mm

Chemistry

1 answer:

kirza4 [7]2 years ago

6 0

Answer:

660 cubic millimeters

Explanation:

Assuming this is a cube - the equation is Volume = L × W × H - plug in all the numbers provided and you get 660 cubic millimeters.

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To indicate the pH of a substance, one can use a dye that is both an acid and that appears as different colors in its protonated

PIT_PIT [208]

Answer:

<em>The pH of the solution is 7.8</em>

Explanation:

The concentration of the solution is 0.001M and the dye could be in its protonated and deprotonated forms. If the concentration of the protonated form [HA] is 0.0002 M the concentration of the deprotonated form will be the subtraction between the concentration of the bye and the concentration of the protonated form:

[A-] = 0.001M - 0.0002M = 0.0008M

Also, the Henderson-Hasselbalch equation is

$pH = pKa + Log \frac{[A^{-}]}{[HA]}$

this equation shows the dependency between the pH of the solution, the pKa and the concentration of the protonated and deprotonated forms. Thus, replacing in the equation

$pH = 7.2 + Log \frac{0.0008M}{0.0002M} = 7.8$

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3 years ago

Which molecules are used to produce energy

marissa [1.9K]

Answer:

Explanation:

fats, proteins, and carbohydrates

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3 years ago

In terms of valence electrons, explain why metals form positive ions.

diamong [38]

Answer:

Explanation:

Metal elements form positively charged ions called cations because they are located on the left side of the periodic table These elements all have valence electrons in an s orbital. These electrons are relatively easy for the atom to lose to achieve a stable octet of electrons in its outermost energy shell.

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3 years ago

How do I do question number 4?

lisabon 2012 [21]

I hope you understood
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3 years ago

When electrons are added to the outer most shell of a carbon atom what does it form

bagirrra123 [75]

When electrons are added to the outermost shell of a carbon atom, it forms an anion.

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3 years ago