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kirill [66]
2 years ago
11

4. At what temperature will 1.21 mol of oxygen (O2), exert a pressure of 1862 mmHg in a

Chemistry
1 answer:
Airida [17]2 years ago
7 0

Answer:

Pressure = 1820 mmHg ... T = ( 2.39atm x 5.12L ) / ( 0.4041 moles x 0.08206atm. ... n is moles, R is the gas constant, and T is temperature in Kelvins.

Explanation:

this might help you

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2. <span>(Note that sulfur is 2 columns from the right-hand end of the periodic table)</span>
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A student's name paired with the sport that they play.​

Explanation:

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Why is it better to conduct an experiment more than once?
lilavasa [31]

The first reason to repeat experiments is simply to verify results. Different science disciplines have different criteria for determining what good results are. Biological assays, for example must be done in at least triplicate to generate acceptable data. Science is built on the assumption that published experimental protocols are repeatable.


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3 years ago
Explain how to use an acid-base indicator to determine pH
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7 0
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Write a balanced equation for the reaction of Na₂S and CdSO₄. Express your answer as a chemical equation. Identify all of the ph
Luba_88 [7]

Explanation:

A chemical reaction equation that contains same number of atoms on both reactant and product side is known as a balanced chemical reaction equation.

For example, Na_{2}S(aq) + CdSO_{4}(aq) \rightarrow Na_{2}SO_{4}(aq) + CdS(s)

Here, number of reactant molecules are as follows.

Na = 2

S = 2

Cd = 1

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Number of product molecules are as follows.

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S = 2

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As there are already equal number of atoms on both reactant and product side. Hence, the reaction equation is balanced.

Also, in this reaction both Na_{2}S and CdSO_{4} are present as aqueous solution. And, CdS is the precipitate that is formed as it is the insoluble solid that forms.

Na_{2}SO_{4} is present in aqueous state.

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3 years ago
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