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vesna_86 [32]
3 years ago
12

The smallest particle of an element is a(n) .atommoleculeDNA​

Chemistry
1 answer:
mamaluj [8]3 years ago
5 0

Answer:

An atom is the smallest particle of an element

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At the equivalence point of a titration of the [H+] concentration is equal to:
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B. At the equivalence point of a titration of the [H+] concentration is equal to 7.

<h3>What is equivalence point of a titration?</h3>

The equivalence point of a titration is a point in titration at which the amount of titrant added is just enough to completely neutralize the analyte solution.

At the equivalence point in an acid-base titration, moles of base equals moles of acid and the solution only contains salt and water.

At the equivalence point, equal amounts of H+ and OH- ions combines as shown below;

H⁺ + OH⁻  → H₂O

The pH of resulting solution is 7.0 (neutral).

Thus, the pH at the equivalence point for this titration will always be 7.0.

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What is best classified as a physical change?
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3 years ago
A 10g vial must have 45ml of diluent added to it. it has a powder volume of 5ml. how many mgr will be in each ml of the final so
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The solution has a concentration 20 mgr in each mL of the final solution.

To solve this problem, we need to know about concentration. The concentration formula can be defined as how much the mass per unit volume is. It can be written as

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From the text we know that :

m = 10g

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V = vsolvent + vsolute

V = 45 + 5

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M = m/V

M = 10gr / 50 mL

M = 1000 mgr / 50mL

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Hence, the solution has a concentration 20 mgr in each mL of the final solution.

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