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kenny6666 [7]
3 years ago
9

The pH of an aqueous solution:_________

Chemistry
1 answer:
dybincka [34]3 years ago
7 0

Answer:

d) must remain at 7

Explanation:

The pH of the aqueous solution should be kept at 7 as it is considered to be a neutral pH chemical.

If the pH exceeds the value 7, it is considered alkaline, and without the pH decreases from the value 7, it is considered acidic.

That is why if this value varies, the qualities of the neutral pH will not be maintained.

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Question 3
Anni [7]

Answer:

True

Explanation:

Sometimes you will need to convert from grams to moles, or moles to grams

5 0
3 years ago
When 150. g zinc sulfide are burned in excess oxygen, 68.5 g of zinc oxide are actually produced, along with sulfur dioxide. Det
Bumek [7]

%yield = 54.6%

<h3>Further explanation</h3>

Percent yield is the compare of the amount of product obtained from a reaction with the amount you calculated

(theoretical)

General formula:

Percent yield = (Actual yield / theoretical yield )x 100%

<h3 />

Reaction

2ZnS+3O₂ ⇒ 2ZnO+2SO₂

MW ZnS = 97.474 g/mol

  • mol ZnS

\tt \dfrac{150}{97.474}=1.54

MW ZnO = 81.38 g/mol

  • mol ZnO (from mol ZnS as limiting reactant, O₂ excess)

\tt \dfrac{2}{2}\times 1.54=1.54

  • Actual ZnO produced

\tt 1.54\times 81.38=125.33~g

Theoretical production = 125.388

  • %yield

\tt \dfrac{68.5}{125.33}\times 100\%=\boxed{\bold{54.6\%}}

4 0
3 years ago
Wind blowing sediment against rock or land area, or sandblasting is called a. abrasion c. deflation b. deposits d. picking up PL
Andreas93 [3]

Answer:

abrasion

Explanation:

20 word limit why

4 0
3 years ago
Read 2 more answers
What is the molarity of a solution with 2 moles of HCl in 2000 mL?
ikadub [295]

Answer:

"1 M" will be the right solution.

Explanation:

The given values are:

Number of moles,

= 2 moles

Volume of solution,

= 2000 mL

or,

= 2 L

Now,

The molarity of the solution will be:

=  \frac{Moles}{Liters}

On substituting the values, we get

=  \frac{2}{2}

=  1 \ M

7 0
3 years ago
Do you agree or disagree for each one of them and provide evidence why??​
sergiy2304 [10]

Answer:

Disagree

Agree

Agree

Disagree

Explanation:

A chemical change is one in which a new kind of substance is formed. It is always accompanied by energy changes.

  • It is wrong to assert that all chemical changes are dangerous. In our body system, chemical changes are constantly happening.
  • Chemical changes shows the law of conservation of mass in that the amount of reactants and products are always the same.
  • Chemical reactions occur when two substances are chemically combined together.
  • Not all dissolution reaction are chemical changes. For example, when sugar dissolves in water, it is not a chemical change.
6 0
2 years ago
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