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Zolol [24]
3 years ago
7

What is the activation energy of a reaction whose rate constant doubles when the temperature is increased from 300K to 350K (ass

uming that the activation energy and pre-exponential factor are both temperature independent)? Express your answer as a number with units.
Chemistry
1 answer:
bekas [8.4K]3 years ago
3 0

Answer:

12.1 kJ

Explanation:

For this problem, we are going to use the Arrhenius Equation.

ln(\frac{k_{2} }{k_{1}})=\frac{E_{a} }{R} (\frac{1}{T_{1}} -\frac{1}{T_{2}} )\\ln(\frac{2}{1} )=\frac{E_{a} }{8.314} (\frac{1}{300}-\frac{1}{350} )

We are going to solve for activation energy, E_{a}.

E_{a} =12.1 kJ

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Answer:

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Explanation:

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7 0
3 years ago
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Determine the mass of a ball with a wavelength of 3.45 × 10-34 m and a velocity of 6.55 m/s
Yuki888 [10]
<span>293 grams The formula for the wavelength of a massive particle is λ = h/p where λ = wavelength h = Plank constant (6.626070040Ă—10^â’34 J*s) p = momentum (mass times velocity) So let's solve for momentum and from there get the mass λ = h/p λp = h p = h/λ Substitute known values and solve p = 6.626070040Ă—10^â’34 J*s/3.45Ă—10^-34 m p = 1.92 J*s/m Since momentum is the product of mass and velocity, we have p = M * V p/V = M So substitute again, and solve. p/V = M 1.92 J*s/m / 6.55 m/s = M 1.92 kg*m/s / 6.55 m/s = M 1.92 kg*m/s / 6.55 m/s = M 0.293 kg = M So the mass is 293 grams</span>
6 0
4 years ago
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Levart [38]

Answer:

Explanation:

1: the sciencetific name of a giant squid is called Architeuthis

2: i dont know I think it says diet but: Giant squid mostly eat deep water fishes and other squids.
3: the range of a Giant squid can be found in oceans around the world at depths of at least 2,950 feet, but their exact  range is unknown.

4, characteristics,

1: it has two large fins attached to its mantle.

2: the giant squid have many unique features, such as their ability to produce 'ink' to distract and deter predators.  

3:


facts,

1: Their eyes are the largest eyes in the animal kingdom and are about 10 inches

2: Their big eyes help them to spy objects in dark depths where most other animals would see nothing

3: Until 2005, nobody had ever seen a giant squid that was alive.

4: According to the stories, an huge squid would wrap its arms around a whale, causing a terrible fight to start. 
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Human IMPACT

Not only can squids and octopuses sense sound, but as it turns out, these and other so-called cephalopods might be harmed by growing noise pollution in our oceans—from sources such as offshore drilling, ship motors, sonar use and pile driving.

7 0
2 years ago
Which of the following is not an example of weathering?
Rina8888 [55]

Answer:

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Duuuuuuuuude. Dude.

Let's think for a sec, because this confused me.

Acid rain is chemical weathering. It has acid in it, so it weathers rocks. (Ewwww.)

Frost wedging is a major duh, because frost can weather rocks.

Oxidation reactions are a yes yes because it becomes oxidized.

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2 years ago
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trapecia [35]

Answer:

See explanation

Explanation:

We have to remember that the formula of <u>sulfur dioxide</u> is SO_2. So, the "S" atom is the central one and the "O" atoms are in the left and right of S. Additionally, "S" and "O" atom has <u>6 valence electrons each</u>. With this in mind, we can start with a structure in which the left oxygen has 2 lone pairs and a double bond, the S atom can have a double bond a single bond and a lone pair and the right oxygen with 3 lone pairs with a single bond <u>(structure A)</u>. Now, if we move the negative charge in the right  (resonance) to the middle and the double bond to the left oxygen we will obtain <u>structure B</u>. Finally, we can move the negative charge in the left to the middle and we will obtain structure C. (See figure 1).

7 0
3 years ago
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