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4 years ago

1. Write the balanced equation for the breakdown of hydrogen peroxide. The equation has been written, you just have to balance.

Chemistry

2 answers:

Mnenie [13.5K]4 years ago

8 0

Explanation:

A balanced equation is defined as the equation which contains same number of atoms on both reactant and product side.

For example, $H_{2}O_{2} \rightarrow H_{2}O + O_{2}$

Number of atoms on reactant side are as follows.

H = 2

O = 2

Number of atoms on product side are as follows.

H = 2

O = 3

Therefore, balance this equation by multiplying $H_{2}O_{2}$ by 2 on reactant side. Thus, the balanced chemical equation is as follows.

$2H_{2}O_{2} \rightarrow H_{2}O + O_{2}$

o-na [289]4 years ago

7 0

The balanced equation is attached in the image below. The coefficients are 2, 2, blank.

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The state of the neuron when not firing a neural impulse is known as the _______________ _______________.

Fed [463]

Answer:Referring to the fact that a neuron either fires completely or does not fire at all.

Explanation:

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2 years ago

Molar mass of 4Fe(OH)2

lakkis [162]

Answer: The molar mass and molecular weight of 4Fe is 223.38.

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3 years ago

Sodium carbonate can be made by heating sodium bicarbonate: 2NaHCO3(s) → Na2CO3(s) + CO2(g) + H2O(g) At 25°C, for this reaction,

insens350 [35]

Answer:

401.17 K is the minimum temperature at which the reaction will become spontaneous under standard state conditions.

Explanation:

The expression for the standard change in free energy is:

$\Delta G=\Delta H-T\times \Delta S$

Where,

$\Delta G$ is the change in the Gibbs free energy.

T is the absolute temperature. (T in kelvins)

$\Delta H$ is the enthalpy change of the reaction.

$\Delta S$ is the change in entropy.

Given at:-

Temperature = 25.0 °C

The conversion of T( °C) to T(K) is shown below:

T(K) = T( °C) + 273.15

So,

T₁ = (25.0 + 273.15) K = 298.15 K

$\Delta H$ = 128.9 kJ/mol

$\Delta G$ = 33.1 kJ/mol

Applying in the above equation, we get as:-

$33.1=128.9-298.15\times \Delta S$

$-29815\Delta S=-9580$

$\Delta S=-9580$ = 0.32131 kJ/Kmol

So, For reaction to be spontaneous, $\Delta G$

Thus, For minimum temperature:-

$\Delta H-T\times \Delta S=0$

$128.9-T\times 0.32131=0$

$T=\frac{128.9}{0.32131}=401.17\ K$

Hence, 401.17 K is the minimum temperature at which the reaction will become spontaneous under standard state conditions.

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3 years ago

How many grams of Iron (III) oxide (Fe2O3) can be produced from 25.0 g of iron and an excess of oxygen?

Masja [62]

Answer:

2.3

Explanation:

cause im right boyyyyyyyu

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3 years ago

Convert 5.0x10^24 molecules to liters.

Over [174]

To convert the given value we need conversion factors to relate molecules to liters. At STP, we know that 1 mol is equal to 22.4 L and by using Avogadro's number we can relate molecules to 1 mol. Calculation is as follows:

5.0x10^24 molecules ( 1 mol / 6.022 x 10^23 molecules ) ( 22.4 L / 1 mol) = 186.0 L

3 0

3 years ago