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iren2701 [21]
3 years ago
8

An element is a pure substance. It can not easily be broken down into parts by physical means.

Chemistry
1 answer:
liberstina [14]3 years ago
7 0

Answer: An element is a pure substance. It can not easily be broken down into parts by physical means.

A)True

B)False

<u>The answer is true. </u>

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I think it's Almond Soy Milk because they're recommending your body's pH to be at 7.5 and the Almond Soy Milk is the answer with the closest pH to 7.5

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Which observation does not indicate that a chemical reaction has occurred?
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change in the total mass of substances

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Turn on Write equation. What you see is an equation that shows the original uranium atom on the left. The boxes on the right rep
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Uranium-238 undergoes alpha decay to form Thorium-234 as daughter product.

Explanation:

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Answer:

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Read 2 more answers
A formic acid buffer solution contains 0. 20 m h c o o h hcooh and 0. 24 m h c o o − hcoox−. the pka of formic acid is 3. 75. wh
irina1246 [14]

A buffer solution contains an equivalent amount of acid and base. The pH of the solution with an acid dissociation constant (pKa) value of 3.75 is 3.82.

<h3>What is pH?</h3>

The amount of hydrogen or the proton ion in the solution is expressed by the pH. It is given by the sum of pKa and the log of the concentration of acid and bases.

Given,

Concentration of salt [HCOO⁻] = 0.24 M

Concentration of acid [HCOOH] = 0.20 M

The acid dissociation constant (pKa) = 3.75

pH is calculated from the Hendersons equation as,

pH = pKa + log [salt] ÷ [acid]

pH = 3.75 + log [0.24] ÷ [0.20]

= 3.75 + log (1.2)

= 3.75 + 0.079

= 3.82

Therefore, 3.82 is the pH of the buffer.

Learn more about pH here:

brainly.com/question/27181245

#SPJ4

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2 years ago
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