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2 years ago

You may normally expect a _ reaction if a _ activation energy is required.

Chemistry

2 answers:

cestrela7 [59]2 years ago

6 0

Answer:

You may normally expect a slow reaction if a high activation energy is required.

Or, You may normally expect a fast reaction if a low activation energy is required.

Explanation:

Strike441 [17]2 years ago

4 0

Answer:

You may normally expect a <em>slow</em> reaction if a <em>high</em> activation energy is required.
Or, You may normally expect a <em>fast</em> reaction if a <em>low</em> activation energy is required.

Explanation:

To answer this question, we should define firstly the term of activation energy.

The activation energy is the minimum energy must the reacting molecules have to initiate the chemical reaction.

Also, we can define it as The energy barrier that the molecules must posses an amount of energy equal or more than the value of this barrier.

So, as the activation energy be of low value, the possibility that the reacting molecules can have this amount of energy to initiate and proceed the reaction increases and the reaction rate also increases.

Additionally, as the activation energy be of high value, the possibility that the reacting molecules can have this amount of energy to initiate and proceed the reaction decreases and the reaction rate also decreases.

Thus, we can answer this question as:

You may normally expect a <em>slow</em> reaction if a <em>high</em> activation energy is required.
You may normally expect a <em>fast</em> reaction if a <em>low</em> activation energy is required.

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Back to TLC

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The information on these pages is available for academic use without restriction.

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1 year ago

Gino made a table to describe parts of the electromagnetic spectrum. A 3-column table with 4 rows. The first column labeled wave

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D. Ultraviolet light should have a short wavelength, not a long wavelength.

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2 years ago

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NH4NO3, whose heat of solution is 25.7 kJ/mol, is one substance that can be used in cold pack. If the goal is to decrease the te

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Answer:

There are necessaries 35,2g of NH₄NO₃ per 100,0g of water to decrease the temperature of the solution from 25,0°C to 5,0°C

Explanation:

To decrease the temperature of the solution there are necessaries:

4,184J/g°C×(5,0°C-25,0°C)×(100,0g+X) = -Y

8368J + 83,68J/gX = Y <em>(1)</em>

Where x are grams of NH₄NO₃ you need to add and Y is the energy that you need to decrease the heat.

Also, the energy Y will be:

Y = 25700J/mol× $\frac{1mol}{80,043g}$ X

Y = 321J/g X <em>(2)</em>

Replacing (2) in (1)

8368J + 83,68J/g X = 321J/g X

8363J = 237,32J/gX

<em>X = 35,2g</em>

<em />

Thus, there are necessaries 35,2g of NH₄NO₃ per 100,0g of water to decrease the temperature of the solution from 25,0°C to 5,0°C

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2 years ago

The laser in a 3D printer uses light with a frequency of 3.844 × 1014 Hz. Calculate the wavelength of this light in nm. Show all

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Answer:

The wavelength of this light is 780.4 nm.

Explanation:

Given that,

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We know that,

$c=f\lambda$

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1 year ago

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Answer:

a. Ca₃(PO₄)₂.

b. 0.010 moles of Ca₃(PO₄)₂ can we expect to be produced

c. 3.1g of Ca₃(PO₄)₂

d. Percent yield = 93.5%

Explanation:

a. Based on the reaction:

3Ca(NO₃)₂(aq) + 2Na₃PO₄(aq) → Ca₃(PO₄)₂(s) + 6NaNO₃(aq)

<em>3 moles of calcium nitrate reacts with 2 moles of sodium phosphate producieng 1 mole of calcium phosphate.</em>

<em />

As you can see, Ca₃(PO₄)₂ is a solid product -(s)-, that means when the reaction occurs the precipitate produced is the solid,

b. As 3 moles of calcium nitrate produce 1 mole of calcium phosphate and there are 0.030 moles of calcium nitrate

0.030 moles Ca(NO₃)₂ × (1 mol Ca₃(PO₄)₂ / 3 moles Ca(NO₃)₂) =

<h3>0.010 moles of Ca₃(PO₄)₂ can we expect to be produced</h3><h3 />

c. As molar mass of Ca₃(PO₄)₂ is 310.18g/mol, the mass of 0.010 moles (The expected mass) is;

0.010 moles Ca₃(PO₄)₂ × (310.18g / mol) =

d. The percent yield is defined as 100 times the ratio between the obtained yield (That is 2.9g of precipitate, Ca₃(PO₄)₂) and the expected yield, 3.1g of Ca₃(PO₄)₂:

$\frac{2.9g}{3.1g} *100$

<h3>Percent yield = 93.5%</h3>

7 0

2 years ago

You may normally expect a _____ reaction if a _____ activation energy is required.

You may normally expect a _ reaction if a _ activation energy is required.