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Oksanka [162]
3 years ago
9

How does a hydroelectric power plant convert energy?

Chemistry
2 answers:
Eddi Din [679]3 years ago
6 0
The answer is c I know because I did did yesterday
ad-work [718]3 years ago
6 0

Answer:

lol

Explanation:

ur mom 200203394949494949595959595

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Sodium hydroxide reacts with aluminum and water to produce hydrogen gas:2 Al(s) + 2 NaOH(aq) + 6 H2O(l) → 2 NaAl(OH)4(aq) + 3 H2
Kay [80]

Answer: 0.147 grams

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}    

\text{Moles of} Al=\frac{1.33g}{27g/mol}=0.049moles

\text{Moles of} NaOH=\frac{4.25g}{40g/mol}=0.106moles

2Al(s)+2NaOH(aq)+6H_2O(l)\rightarrow Na(Al(OH)_4(aq)+3H_2(g)

According to stoichiometry :

2 moles of Al require = 2 moles of NaOH/tex]Thus 0.049 moles of [tex]Al will require=\frac{2}{2}\times 0.049=0.049moles  of NaOH

Thus Al is the limiting reagent as it limits the formation of product and NaOH is the excess reagent.

As 2 moles of Al give = 3 moles of H_2

Thus 0.049 moles of Al give =\frac{3}{2}\times 0.049=0.0735moles  of H_2

Mass of H_2=moles\times {\text {Molar mass}}=0.0735moles\times 2g/mol=0.147g

Thus 0.147 g of H_2 will be produced from the given masses of both reactants.

6 0
3 years ago
At 45 C the volume of a certain gas is 27.5 L
wariber [46]
Regretfully, I do not know what is asked of the problem because it is not stated above. However, it is easier to answer any question pertaining to the temperature, volume, and pressure of gases by assuming that they behave ideally. With this, we'll be able to use the ideal gas law which is mathematically expressed as,
                                       PV = nRT
where P and V are pressure and volume, respectively. n is the amount of material in mol, R is gas constant, and T is temperature. 
4 0
4 years ago
How are rain hail and snow formed
zavuch27 [327]
When cloud particles become too heavy to remain suspended in the air, they fall to the earth as precipitation. Precipitation occurs in a variety of forms; hail, rain, freezing rain, sleet or snow.
When the temperature is too hot for snow it'll rain and if the tempature is too cold it will freeze the rain and that's how you get snow or hail.

Hope this helped :)
Have a great day
7 0
3 years ago
What are cells made of?
skad [1K]

Answer: All cells are made from the same major classes of organic molecules: nucleic acids, proteins, carbohydrates, and lipids.

Explanation: please mark as brainliest

8 0
3 years ago
What is the value of Avogadro's constant?​
diamong [38]

Answer:

6.02214154 x 1023

Explanation:

6 0
3 years ago
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