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aev [14]
3 years ago
11

Magnesium and oxygen balanced

Chemistry
1 answer:
11Alexandr11 [23.1K]3 years ago
8 0
2Mg+ O₂= 2MgO
The charge of Mg is+2 and the charge of Oxygen is -2. 2 oxygen atoms will have a charge of -4 so the Mg atoms have to equal +4. A coefficient of 2 for the Mg atoms will balance it out 
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A 410 L volume of nitrogen gas is cooled from 61 C to -25 C. What is the volume of the nitrogen at the lower temperature if all
Lena [83]

Answer:

304.5\text{L}

Explanation:

Here, we want to get the volume of the nitrogen gas at the lower temperature

From Charles' law, we know that volume and temperature (in Kelvin) are directly proportion

The mathematical relationship is:

\frac{V_1}{T_1}\text{ = }\frac{V_2}{T_2}

Where:

V1 is the initial volume which is 410 L

V2 is the final volume which is unknown

T1 is the initial temperature which we will convert to Kelvin by adding 273.15 K, we have it as 61 + 273.15 = 334.15 K

T2 is the final temperature which we have to convert to Kelvin by adding it to 273.15K : We have that as -25 + 273.15 = 248.15 K

Substituting the values, we have it that:

\begin{gathered} \frac{410}{334.15}\text{ = }\frac{V_2}{248.15} \\  \\ V_2\text{ = }\frac{248.15\text{ }\times410}{334.15} \\  \\ V_2\text{ = 304.5 L} \end{gathered}

6 0
2 years ago
Calculate the pH if the [H^+] = 9.71 ×<br> 10^-8
oksano4ka [1.4K]

Answer:

pH = 7.01

Explanation:

The pH can be calculated using the formula:

pH = -log[H⁺]

In this formula, [H⁺] represents the concentration of H⁺. Since you have been given this value, you can easily find the pH.

pH = -log[H⁺]

pH = -log[9.71 x 10⁻⁸]

pH = 7.01

4 0
2 years ago
Read 2 more answers
What is the meaning of blood?
Vanyuwa [196]
Blood is a red coloured fluid which consists of two parts plasma and corpuscles
6 0
3 years ago
In a chemical reaction, the difference between the potential energy of the products of the potential energy of the reactants is
natka813 [3]
In a chemical reaction, the difference between the potential energy of the products and the potential energy of the reactants is equal to the heat of the reaction<span>. This is, the net energy released or absorbed (change) during a chemical reaction is the sum of the potential energy of the products less the sum of the potential energy of the reactants.</span>
3 0
4 years ago
Using complete sentences, explain how to predict the products and balance the reaction between sulfuric acid and potassium hydro
Dahasolnce [82]

The product(s) of the reaction are to be determined given the reactants, sulfuric acid and potassium hydroxide. sulfuric acid is an acid, whereas potassium hydroxide is a basic. The results of this neutralizing process are salt and water.

<h3>What is the reaction between sulfuric acid and potassium hydroxide?</h3>

The result will be, H+ from H₂SO₄ reacts with OH- from KOH to generate H₂O. Also, K+ reacts with SO₄²⁻ to create K₂SO4₄

As a result, the balanced equation will be:

\rm H_2SO_4 + 2KOH --- > K_2SO_4 + 2H_2O

Thus, the product(s) of the reaction are to be determined given the reactants, sulfuric acid and potassium hydroxide. Sulfuric acid is an acid, whereas potassium hydroxide is a basic. The results of this neutralizing process are salt and water.

Learn more about potassium hydroxide

brainly.com/question/21904397

#SPJ1

6 0
3 years ago
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