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4 years ago

EASY QUICK CHEM QUESTION!! Which line indicates a higher reaction rate?

Chemistry

2 answers:

ad-work [718]4 years ago

3 0

2. B because it has a lower activation energy.

idk because you have no picture with the lines on it

julsineya [31]4 years ago

3 0

Answer:The correct answer si option B.

Explanation:

According to Arrhenius equation:

$k=Ae^{\frac{-E_a}{RT}}$

k = Rate constant of the reaction at temperature T.

A = frequency factor

$E_a$ = Activation energy.

R = universal gas constant

$k\propto \frac{1}{E_a}$

The graph clearly tells us that the activation energy of the reaction A is more than the reaction B.

This means that rate constant of the reaction A is smaller than the rate constant of the reaction B according Arrhenius equation.

As we know that higher the value of rate constant more will be the rate of the reaction.Then the rate of reaction B is more than that of the rate of reaction A.

Hence, the the correct answer is option B.

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How many moles of a solute is present in 4.00L of an 8.30M solution

Sladkaya [172]

Answer:

The number of moles of solute present in 4.00 L of an 8.30 M solution is 33.2

Explanation:

The Molarity (M) or Molar Concentration is the number of moles of solute per liter of solution; in other words it is the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of the solute by the volume of the solution:

$Molarity=\frac{number of moles of solute}{volume}$

Molarity is expressed in units ( $\frac{moles}{liter}$ ) or M.

In this case:

molarity= 8.30 M
number of moles of solute= ?
volume= 4.00 L

Replacing:

$8.30 M=\frac{number of moles of solute}{4 L}$

Solving:

number of moles of solute= 8.30 M* 4 L= 8.30 $\frac{moles}{liter}$ * 4 L

number of moles of solute =33.2

<u><em>The number of moles of solute present in 4.00 L of an 8.30 M solution is 33.2</em></u>

6 0

3 years ago

Melissa uses bags of mulch that weigh 40 pounds each. She needs to carry 10 bags to her truck. She usually carries one bag at a

umka21 [38]

NO:she would have to use twice the force over half the distance

6 0

3 years ago

Read 2 more answers

How many moles of aluminum do 4.40×1024 aluminum atoms represent?

zhannawk [14.2K]

For this problem we use the Avogadro's number which is an empirical value that relates the number of particles to the number of moles. Its approximated value is 6.022×10²³ atoms/mole. The solution is as follows:

4.40×10²⁴ aluminum atoms * 1 moles/6.022×10²³ atoms = 7.306

Thus, there are 7.306 moles of aluminum.

3 0

4 years ago

4. Is the ketone oxidized or reduced during this reaction and how can you tell?

Lady_Fox [76]

The answer will be a

3 0

3 years ago

82. How many moles of calcium are in 3.82g of calcium?

lana66690 [7]

Moles= mass/Mr
Moles= 3.82/40
Moles= 0.0955 mol

5 0

3 years ago