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2 years ago

Why is it important for all of your glassware to be clean and dry before performing a titration

Chemistry

1 answer:

ss7ja [257]2 years ago

5 0

Explanation:

It is necessary that the glassware which we use during titration needs to be clean and dry before use because otherwise the remaining reagents will get mixed up with the solutions.

As a result, this will lead to a change in analysis results.

Hence, an error will occur in the resulting values.

Also, when not cleaned properly the any other substance remaining in the glassware might react with the solution leading to a change in the solution.

In that case also, error will occur.

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A hypothetical element x has 3 naturally occurring isotopes: 41.20% of 21x, with an atomic weight of 21.016 amu, 50.12% of 22x,

iogann1982 [59]

The average atomic weight is calculated by adding up the products of the percentage abundance and atomic weight. In this item, we have the equation,

A = (0.412)(21.016 amu) + (0.5012)(21.942 amu) + (0.0868)(23.974 amu)

Simplifying the operation will give us the answer of 21.74 amu.

Answer: 21.74 amu

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2 years ago

A canoe displaces 100 L of water. Water weighs 9.8 N/L. What is the buoyant force on the canoe?

Setler79 [48]

Hey there!

The Buoyant force is going to be equal to the weight of the water displaced and it would be like this 100 L(9.8 N/L) = 980 N.

Hope this helped and mind marking me brainliest. Thank you!

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2 years ago

Read 2 more answers

Please Help me!! Match the definition to the location on the Venn Diagram

frozen [14]

The answer is 123
Brainliest??

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3 years ago

When a cell uses chemical energy to perform work it couples _____ reaction with _____ reaction?

Yanka [14]

When a cell uses chemical energy to perform work it couples exergonic reaction with endergonic reaction.

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3 years ago

When barium reacts with tellurium to form an ionic compound, each metal atom loses electron(s) and each nonmetal atom gains elec

Bess [88]

Answer: The ionic compound formed is $baF_2$ (barium fluoride)

Explanation:

Ionic compound is formed by the complete transfer of electrons from 1 atom to another atom. The cation is formed by the loss of electrons by metals and anions are formed by gain of electrons by non metals.

Taking the metal as barium and non-metal as fluorine.

Barium is the 56th element of the periodic table having electronic configuration of $[Xe]6s^2$

This element will loose 2 electrons and will form $Ba^{2+}$ ion

Fluorine is the 9th element of the periodic table having electronic configuration of $[He]2s^22p^5$

This element will gain 1 electron and will form $F^{-}$ ion

By criss-cross method, the oxidation state of the ions gets exchanged and they form the subscripts of the other ions. This results in the formation of a neutral compound.

Hence, the ionic compound formed is $baF_2$ (barium fluoride)

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2 years ago