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irina1246 [14]
3 years ago
9

Look at the equation for a displacement reaction below. What lost electrons in the reaction? Give the full name, not the symbols

.​

Chemistry
1 answer:
garri49 [273]3 years ago
5 0

Answer:

Cupric ions

Explanation:

In the single displacement reaction shown, the cupric ions lost two electrons.

    Cu²⁺  + 2e⁻ →  Cu

The replacement of a metallic ion in solution by a metal atom higher in the activity series than than the metal in solution falls into this category of reactions.

  Since Zn higher in the series, it displacements the cupric ions.

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Suppose in an experiment to determine the amount of sodium hypochlorite in bleach, 0.0000524 mol K I O 3 were titrated with an u
11111nata11111 [884]

<u>Answer:</u> The amount of sodium thiosulfate required is 2.62\times 10^{-5} moles

<u>Explanation:</u>

Moles of KIO_3 solution given = 0.0000524 moles

The chemical equation for the reaction of potassium iodate and sodium thiosulfate follows:

2KIO_3+Na_2S_2O_3\rightarrow K_2S_2O_3+2NaIO_3

By Stoichiometry of the reaction:

2 moles of potassium iodate reacts with 1 mole of sodium thiosulfate

So, 0.0000524 moles of potassium iodate will react with = \frac{1}{2}\times 0.0000524=0.0000262mol of sodium thiosulfate

Hence, the amount of sodium thiosulfate required is 2.62\times 10^{-5} moles

4 0
3 years ago
Please help!! ASAP Dora rolled a marble down a ramp and recorded the potential energy and kinetic energy of the marble at differ
timofeeve [1]

Answer:

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Explanation:

6 0
4 years ago
Which type of property can be observed only by changing a substance into a different substance?
Svetradugi [14.3K]

Answer: chemical property.


Explanation:


The chemical properties are the capacity or incapacity of a substance to transform into one or more different substance either by reacting with one or more different substances or by decomposition.


Such properties can only be observed when such change (reaction) takes place and the substance, therefore, is transformed into one or more different substances.


On the other hand, the physicial properties can be observed or measured without changing the composition of the sample.

4 0
4 years ago
Read 2 more answers
What is the mole fraction of sodium chloride in solution that is 13. 0 y mass sodium chloride and that has a density of 1. 10 g/
lyudmila [28]

Mole fraction is the ratio of the constituent moles to the total constituents. The mole fraction of sodium chloride is 0.0443.

<h3>What is a mole fraction?</h3>

A mole fraction is the proportion of the moles of the component in a total component present.

In 100 gm of solution 13.0 5 means, there is 13.0 gm of sodium chloride present. The mass of water is calculated as,

100 - 13.0 = 87.0 gm

Moles of sodium chloride is calculated as:

\begin{aligned} \rm moles &= \rm \dfrac{mass}{molar\; mass} \\\\&= \dfrac{13}{58}\\\\&= 0.224 \;\rm moles\end{aligned}

Moles of water are calculated as:

\begin{aligned} \rm moles &= \rm \dfrac{mass}{molar\; mass} \\\\&= \dfrac{87}{18}\\\\&= 4.83\;\rm moles\end{aligned}

Now, moles fraction is calculated by dividing moles of sodium chloride by total moles as,

\begin{aligned} \text{Mole fraction of NaCl} &= \dfrac{0.224}{0.224 + 4.83}\\\\&= 0.0443\end{aligned}

Therefore, the mole fraction of sodium chloride is 0.0443.

Learn more about mole fraction here:

brainly.com/question/8076655

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2 years ago
Nexium is a medication that aids in neutralizing the excess acid in the stomach. Which
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