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4 years ago

Describe how temperature affects the rate of a reaction

1 answer:

8 0

Hello! The reactions are catalyzed, or sped up by enzymes. Enzymes have strict conditions they can work under, including a small range of temperature. Temperature increase slows the rate of reaction, and extreme temperature increase can denature, or destroy an enzyme. Hope this helps! :)

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Green plants absorbs sunlight to power photosynthesis, the chemical synthesis of food from water and carbon dioxide. The compoun

Serggg [28]

Answer: The frequency of this light is $6.62\times 10^{14}s^{-1}$

Explanation:

To calculate the wavelength of light, we use the equation:

$\lambda=\frac{c}{\nu}$

where,

$\lambda$ = wavelength of the light = $453nm=453\times 10^{-9}m$

c = speed of light = $3.0\times 10^8m/s$

$\nu$ = frequency of light = ?

$\nu=\frac{3.0\times 10^8m/s}{453\times 10^{-9}m}=6.62\times 10^{14}s^{-1}$

The frequency of this light is $6.62\times 10^{14}s^{-1}$

3 0

3 years ago

3. Sodium carbonate (Na2CO3) is formed from the reaction between

user100 [1]

Na2C03 is formed through the reaction of

NaOH and H2CO3 namely sodium hydroxide and carbonic acid

NaOH -> strong base

H2CO3-> weak acid

8 0

3 years ago

Read 2 more answers

(Link; https://www.chemteam.info/SigFigs/SigFigsFable.html)

Anna007 [38]

1. The measurement turned out to be so expensive since the student did not rely on the significant figures to calculate the edge of the cube and approximate it to the next value (2.1 cm possibly) that would allow a simpler construction and therefore its cost was much lower .

2. The student had to take all the significant figures in his calculations, with which he would have:

$Volume = \frac{mass}{density}$

$Volume = \frac{80g}{8.67g/mL}$

Volume = 9.2272203 mL

Since the figure to be constructed is a cube, he had to calculate the cube root of the volume to find the value of the edge of the cube:

Edge of the cube = $\sqrt[3]{9.2272203 cm^{3} }$ (Taking into account that $cm^{3}$ is proportional to mL)

Edge of the cube = 2.097443624 cm

Because the cube edge value is so specific, in order to manage his budget, he was able to order a 2.1 cm cube, which would bring the mass up to 80.29287 g, and in the lab reduce one of the faces to the appropriate weight. .

On the other hand, the main thing he had to do was ask how much it would cost to make a cube with those specifications, especially when they mentioned that it would be "expensive" and he only had $50.

The significant figures guarantee the correct operation of a machinery, a gear, a team in general, for which the accuracy will not only be taken to the millimeter, but sometimes microns or much more specific, as in the case of computer components, Therefore, it is very important, if not, and if arbitrary measurements are taken that do not consider significant figures, the components could not function properly, which would cause a loss in time, effort and manpower.

If you want to learn more about exercises with significant figures, you can see the next link: brainly.com/question/11904364?referrer=searchResults

4 0

2 years ago

If a stack of 40 solid oxide fuel cells in series generates 1,000 W of power, and each cell contributes equally to the power of

Fittoniya [83]

Answer:

25 W

Explanation:

8 0

3 years ago

Read 2 more answers

9) How long would it take 100 molecules of valinomycin to transport enough K+ to change the concentration inside an erythrocyteo

Alenkinab [10]

Answer: Time required for 100 molecules of valinomycin to transport enough $K^{+}$ to change the concentration inside an erythrocyte is 10 minutes.

Explanation:

The given data is as follows.

Ions to be transported = $(10 mM) \times (100 \mu^{3})(N)$

= $0.010 mol \times 10^{-13} L \times 6.02 \times 10^{23} ions/mol$

= $6.02 \times 10^{6}$ ions

Here, there are 100 ionophores are present and each one of ionophores are required to transport a value of ions.

Therefore, the time required for 100 molecules of valinomycin to transport enough $K^{+}$ to change the concentration inside an erythrocyte is as follows.

$6.02 \times 10^{6} ions \times \frac{1 sec}{10^{4} ions}$

= 602 sec

or, = 10 minutes (as 1 min = 60 sec)

Thus, we can conclude that time required for 100 molecules of valinomycin to transport enough $K^{+}$ to change the concentration inside an erythrocyte is 10 minutes.

3 0

3 years ago