All categories

2 years ago

Which energy resource has the advantage of producing clean energy that is less harmful to the environment?

Chemistry

1 answer:

AnnyKZ [126]2 years ago

6 0

Answer:

The answer is wind energy.

Explanation:

I did the quiz on time4learning.

You might be interested in

Glucose (C6H12O6)(C6H12O6) can be fermented to yield ethanol (CH3CH2OH)(CH3CH2OH) and carbon dioxide (CO2).

zhenek [66]

Answer: a) 49.8 gram

b) 47.0 %

Explanation:

First we have to calculate the moles of glucose

$\text{Moles of glucose}=\frac{\text{Mass of glucose}}{\text{Molar mass of glucose}}=\frac{97.5g}{180.15g/mole}=0.54moles$

The balanced chemical reaction will be,

$C_6H_{12}O_6\rightarrow 2CH_3CH_2OH+2CO_2$

From the balanced reaction, we conclude that

As,1 mole of glucose produce = 2 moles of ethanol

So, 0.54 moles of glucose will produce = $\frac{2}{1}\times 0.54=1.08$ mole of ethanol

Now we have to calculate the mass of ethanol produced

$\text{Mass of ethanol}=\text{Moles of ethanol}\times \text{Molar mass of ethanol}$

$\text{Mass of ethanol}=(1.08mole)\times (46.08g/mole)=49.8g$

Now we have to calculate the percent yield of ethanol

$\%\text{ yield of ethanol}=\frac{\text{Actual yield}}{\text{Theoretical yield }}\times 100=\frac{23.4g}{49.8g}\times 100=47.0\%$

Therefore, the percent yield is 47.0 %

7 0

3 years ago

Which temperature represents the highest average kinetic energy of the particles in a sample of matter ?

Genrish500 [490]

Answer: Option C is correct.

Explanation: Average kinetic energy is directly proportional to the absolute temperature. Higher the temperature means higher the kinetic energy.

Average kinetic energy is given by:

$K.E._{avg}=\frac{3kT}{2}$

Where, k = Boltzman constant

T = Temperature

We are given different temperatures, so to compare they all should have the same units.

a) 298K

b) 267K

c) 27°C = 273+27 = 300K

d) 12°C = 273+12 = 285K

Looking at the temperature values, C part will have the highest average kinetic energy.

3 0

3 years ago

Read 2 more answers

The hydrogen ion concentration of a vinegar solution is 0.00010 m. how is this concentration written in scientific notation?

9966 [12]

We are given with a vinegar with a hydrogen ion concentration of 0.00010 m. We are asked to express this concentration in scientific notation. The answer when expressed in scientific notation is 1x10^-4 m or molality. Answer is 1x10^-4 m.

3 0

4 years ago

Read 2 more answers

Solubility is usually expressed as the maximum number of grams of

Aleonysh [2.5K]

We usually expess solubility as the maximum number of grams of of a solute that will dissolve in 100 g of solvent.

For example, at 20 °C, the solubility of sodium chloride is 35.89 g/100 g water.

7 0

4 years ago

How does the sun cause wind

Juli2301 [7.4K]

Well, the sun heats up colder areas, the temperature difference causes wind. (sorry if wrong)

4 0

4 years ago