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3 years ago

ECoal and petrol are called non-renewable sources of energy,why

Chemistry

1 answer:

12345 [234]3 years ago

8 0

Answer:

because they take thousands or even millions of years to naturally replenish or replaced , which is not the average human lifetime

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The amount of energy released when 50.0 kg is converted into energy is x 10A

Usimov [2.4K]

Answer: 4.5x10^18

Explanation:

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4 years ago

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How many moles of h2so4 are needed to completely neutralize 0.0164 mol koh? mol h2so4

makkiz [27]

Answer: Heyo Kenji Here! Here's your answer- :0.0082 moles

Explanation: Hope this helps!

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3 years ago

It takes a season to create a hybrid, and about 15 years to create a_____.

andreev551 [17]

•It takes a season to create a hybrid, and about 15 years to create a Plant variety.

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4 0

3 years ago

50 grams of acetic acid C2H4O2 are dissolved in 200 g of water. Calculate the weight % and mole fraction of the acetic acid in t

Len [333]

$50g$ $of$ $C_2H_4O_2$ $in$ $200g$ $H_2O$

so:

$\frac{50}{200+50}+100\%= \frac{50*100}{250}\%=20\%$

$MW of acid = 2*C+4*H+2*O = 2*12+4*1+2*16=$

$=24+4+32=60g/mol$

so:

$\frac{50g}{60g/mol}\approx0.83moles$

it means that

in $50g$ of acid there is $\approx0.83$ moles of acid

$MW of H_2O = 2*H+O=2*1+16=2+16=18g/mol$

so:

$\frac{200g}{18g/mol}\approx11.11moles$

it means that:

in $200g$ of water there is $\approx11.11$ moles of water

therefore:

$\frac{0.83mol}{11.11mol+0.83mol}= \frac{0.83mol}{11.94mol}=0.069$

So your answers are:

$20\%$

and the mole fraction is:

$0.069$

6 0

4 years ago

Ammonium chloride, ammonium sulfate and ammonium nitrate are used in fertilisers.

Hoochie [10]

Answer:

1.0625 g

Explanation:

Number of moles in 5g of NH4NO3 = 5.0g/80g/mol = 0.0625 moles

Again the balanced reaction equation is;

NH3 + HNO3 → NH4NO3

So,

1 mole of NH3 yields 1 mole of NH4NO3

x moles of NH3 yields 0.0625 moles of NH4NO3

x = 0.0625 moles of NH3

Mass of NH3 = number of moles * molar mass

Mass of NH3 = 0.0625 moles * 17g/mol

Mass of NH3 = 1.0625 g

7 0

3 years ago

ECoal and petrol are called non-renewable sources of energy,why​

ECoal and petrol are called non-renewable sources of energy,why