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3 years ago

Is 2H 2 + O 2 ⟶ 2H 2O a combination reaction

Chemistry

2 answers:

Masja [62]3 years ago

6 0

I have the same question

liq [111]3 years ago

3 0

Answer:

It's not any kind of reaction. This is the decomposition/electrolysis reaction: 2H2O=2H2+O2 and this is the synthesis/combustion/oxidation reaction:2H2+O2=2H2O.

Explanation:

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How does the final paragraph relate to the main idea of the article? (4.03) science.

V125BC [204]

Answer:

Indicates the writer's stance on the main idea of a paragraph. The controlling idea appears in the paragraph's topic sentence. ... The final sentence of a paragraph that summarizes the topic sentence using different words. Words and phrases that show how the ideas in sentences and paragraphs are related.

Explanation:

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3 years ago

When 5.0 mol Al react with 13 mol HCl, what is the limiting reactant, and how many moles of AlCl3 can be formed?

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4 years ago

Which statement about erosion is true? Most erosion occurs too slowly to observe. Most erosion occurs too quickly to observe, Er

olganol [36]

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3 years ago

1. Identify all of the gas law equations that relate to the ideal gas law.

zheka24 [161]

Explanation:

1) PV = nRT(ideal gas equation )

All of the gas laws equations that relate to the ideal gas law:

1. Boyle's law. This law states that pressure is directly proportional to the volume of the gas at constant temperature.

The equation given by this law is:

$P_1V_1=P_2V_2$

where,

$P_1\text{ and }V_1$ are initial pressure and volume.

$P_2\text{ and }V_2$ are final pressure and volume.

2. Charles' Law. This law states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.

Mathematically,

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

where,

$V_1\text{ and }T_1$ are the initial volume and temperature of the gas.

$V_2\text{ and }T_2$ are the final volume and temperature of the gas.

3. Gay-Lussac Law. This law states that pressure of the gas is directly proportional to the temperature of the gas at constant pressure.

Mathematically,

$\frac{P_1}{T_1}=\frac{P_2}{T_2}$

where,

$P_1\text{ and }T_1$ are the initial pressure and temperature of the gas.

$P_2\text{ and }T_2$ are the final pressure and temperature of the gas.

4. Avogadro's law. This law states that volume is directly proportional to number of moles at constant temperature and pressure.

The equation used to calculate number of moles is given by:

$\frac{V_1}{n_1}=\frac{V_2}{n_2}$

where,

$V_1\text{ and }n_1$ are the initial volume and number of moles

$V_2\text{ and }n_2$ are the final volume and number of moles

Initial moles of gas = $n_1=0.0400 mol$

Initial volume of the gas = $V_1=500 mL=0.5 L (1 mL = 0.001 L)$

Final moles of gas = $n_2=?$

Final volume of the gas = $V_2=1.00 L$

Equation used to find the amount of gas added is Avogadro's law equation :

$\frac{V_1}{n_1}=\frac{V_2}{n_2}$

$n_2=\frac{V_2\times n_1}{V_1}=\frac{1.00 L\times 0.0400 mol}{0.5 L}$

$n_2=0.08 mol$

3 0

3 years ago

Energy is required to produce a chemical change during

levacccp [35]

<span>Energy is required to produce a chemical change during (2) electrolysis, given that it is the only stage which includes only a chemical change. The other options include physical changes as well.</span>

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3 years ago