2 years ago

Which energy source has been developed and improved by chemists?

Chemistry

2 answers:

Nostrana [21]2 years ago

8 0

Nuclear hope this helps

Alex_Xolod [135]2 years ago

5 0

Answer:Explained

Explanation:

The following energy has been developed and improved by chemists

Nuclear energy
coal gas
gasoline
Ethanol
Kerosene
Propane

Anything which includes chemical reaction has been developed by chemists to utilize the hidden energy.For example Nuclear energy

If proper reactions and controlled environment is given then a huge amount of energy can be generated from Radioactive elements.

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If 3.0 g of NH3 reacts with 5.0 g of HCl, what is the limiting reactant?

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<h2>Answer:HCl</h2>

Explanation:

$\text{number of moles}=\frac{\text{given mass}}{\text{molar mass}}$

For $NH_{3},$

$\text{given mass}=3g$

$\text{molar mass}=14+3=17g$

$n_{NH_{3}}=\frac{3}{17}=0.176$

For $HCl,$

$\text{given mass}=5g$

$\text{molar mass}=1+35.5=36.5g$

$n_{HCl}=\frac{5}{36.5}=0.136$

The reaction between $NH_{3}$ and $HCl$ is

$NH_{3}+HCl$ → $NH_{4}Cl$

So,one mole of $NH_{3}$ requires one mole of $HCl$

$0.176$ moles of $NH_{3}$ requires $0.176$ moles of $HCl$

But there are only $0.136$ moles of $HCl$ available.

$HCl$ will be consumed first.

So, $HCl$ is the limiting reagent.

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