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2 years ago

How is the water supply for New York being protected?

1 answer:

8 0

because of good government and there is skilled manpower who help and protect the water supply for New York being protected............

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When you add the metal the volume increases from 25.0 to 28.9 how would you find the volume of the metal?

Rzqust [24]

3.9L

Explanation:

Initial volume = 25L

Final volume = 28.9L

The initial volume is the volume of the liquid without the metal in originally in the container. It is 25L

After adding the metal, the volume changes to 28.9L

Final volume = Initial volume + volume of metal

To find the volume of metal make it the subject of the expression;

Volume of metal = Final volume - initial volume = 28.9 - 25 = 3.9L

The volume of irregular solids are measured by immersing them in water. The change in volume gives their volume.

Sometimes the volume of water displaced is the volume of the solid.

learn more:

Volume brainly.com/question/5055270

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3 years ago

Is chlorine a substance or a mixture

WARRIOR [948]

Answer:

its a substance

Explanation:

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2 years ago

What ion carries two negative charges and is isoelectronic with k+?

lutik1710 [3]

The answer is: " S²⁻ " .
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2 years ago

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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2 years ago

Ray Of Light [21]

theAnswer:A

Explanation:

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2 years ago