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Marat540 [252]
2 years ago
14

5

Chemistry
1 answer:
castortr0y [4]2 years ago
7 0

Answer:

D . A substance with a pH of 8

Explanation:

pH stands for <em>"Potential for Hydrogen." </em>This is an indicator of a solution's acidity or alkalinity. It is also used to tell <em>which chemicals are great for cleaning. </em>

pH 7 and pH 8 are both considered<em> "neutral pH,"</em> thus, solutions with these pH are often used as<em> dishwashing detergents </em>because they do not destroy the surfaces of objects. However, pH 8 is said to be<u> more alkaline in nature</u>. This allows it to destroy the residues, such as <em>fats and oils</em>, in pots and pans. It is the<em> pH of baking soda.</em>

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Using the following reaction:
Romashka-Z-Leto [24]

Answer:

Mn is the oxidizing agent.

N is the reducing agent.

Explanation:

Hello!

In this case, according to the undergoing chemical reaction, it is seen that the manganese in KMnO4 has an oxidation state of 7+, in MnSO4 of 2+ and nitrogen in KNO2 is 3+ and in KNO3 is 5+; thus we have the following half-reactions:

Mn^{7+}+5e^-\rightarrow Mn^{2+}\\\\N^{3+}\rightarrow N^{5+}+2e^-

Thus, since manganese is undergoing a decrease in the oxidation state, we infer it is the oxidizing agent whereas nitrogen, undergoing an increase in the oxidation state is the reducing agent.

Best regards!

5 0
2 years ago
What is the pH of a 2.10 x 10⁻⁶ M solution of HCl?<br>​
Delvig [45]

Answer:

pH = 5.7

Explanation:

pH = -log[H^+]  

For HCl pH = -log[HCl] = - log [2.10 x 10⁻⁶ ] = 5.7

5 0
2 years ago
The length of a covalent bond depends upon the size of the atoms and the bond order.
lukranit [14]

Answer:

True

Explanation:

The length of covalent bond depends upon the size of atoms and the bond order.

6 0
2 years ago
What is the molarity of a 10 L solution containing 5.0 moles of solute?
Setler79 [48]
Molarity = Moles of solute/ L(liters) of solution

So let's plug in the information. 

5.0 moles/10L = 0.5 M


3 0
2 years ago
Read 2 more answers
A nickle is about 2 millimeters thick, or 2/1000 of a meter.how many nanometers is this?
Softa [21]
You know that you can just google it right? It has this converter.
8 0
3 years ago
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