All categories

3 years ago

If a neutral atom becomes negatively charged, it has undergone _________.

1 answer:

7 0

<span>If a neutral atom becomes negatively charged, it has undergone reduction.

Reduction is the process through which a neutral atom gain an electron (thus reducing its oxidation number) and turns into a negative ion (also known as : anion)</span>

You might be interested in

Solve using significant figures <br> 8.647 + 45.969

Murrr4er [49]

Answer:

54.616

Explanation:

8.647 + 45.969

or rewrite for easier look:

45.969 +

8.647 =

54.616

Hope this helped :3

5 0

4 years ago

Read 2 more answers

Which of the following statements is most accurate?

Troyanec [42]

Answer:

Explanation:

This is because exothermic reactions occurs when bnds are formed, and involves the release of energy.

Endothermic reaction occur when bonds are broken,and involves absorption of energy.

4 0

3 years ago

Use the Henderson-Hasselbalch equation, eq. (3), to calculate the pH expected for a buffer solution prepared from this acid and

notka56 [123]

Answer:

$pH=4.56$

Explanation:

Hello there!

In this case, given the Henderson-Hasselbach equation, it is possible for us to compute the pH by firstly computing the concentration of the acid and the conjugate base; for this purpose we assume that the volume of the total solution is 0.025 L and the molar mass of the sodium base is 234 - 1 + 23 = 256 g/mol as one H is replaced by the Na:

$n_{acid}=\frac{0.2g}{234g/mol}=0.000855mol\\\\n_{base}= \frac{0.2g}{256g/mol}=0.000781mol$

And the concentrations are:

$[acid]=0.000855mol/0.025L=0.0342M$

$[base]=0.000781mol/0.025L=0.0312M$

Then, considering that the Ka of this acid is 2.5x10⁻⁵, we obtain for the pH:

$pH=-log(2.5x10^{-5})+log(\frac{0.0312M}{0.0342M} )\\\\pH=4.60-0.04\\\\pH=4.56$

Best regards!

6 0

3 years ago

27.2g CuCl2 was dissolved in 2.50 L of the water. What is the molality of the solution?

stealth61 [152]

5.167g of calcium chloride is dissolved in 101.0mL of water in a calorimeter whose calorimeter constant is 15.3J/Â°C. The temperature rises from 18.4Â°C to 27.2 ...

5 0

3 years ago

As the movement of molecules within a substance increases, describe the change in heat of the substance. Justify your response i

Vladimir [108]

It will get hotter, because the molecules create heat when they move around just like us when we run.

3 0

3 years ago

Read 2 more answers