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grandymaker [24]
3 years ago
9

In reality, energy conversion from burning fuel is never 100% efficient. Significant loss of energy due to heating occurs. If th

e generator were only 20% efficient (which is more realistic), how much energy in joules would be converted to electrical energy and how much would be lost to heat? (2 points)​
Chemistry
1 answer:
algol [13]3 years ago
6 0

Answer:

Electrical energy = 130000000 J and Heat energy = 520000000 J

Explanation:

Multiply the amount of joules from the last question (650000000) by .20 and .80. (Which are the percentages)

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Calculate the molar solubility of silver(i) bromate with ksp = 5. 5×10-5. also, convert the molar solubility to the solubility.
Sindrei [870]

The molar solubility is 7.4×10^{-3} M and the solubility is  7.4×10^{-3} g/L .

Calculation ,

The dissociation of silver bromide is given as ,

AgBr → Ag ^{+} + Br^{-}

S  

 -          S        S        

Ksp =  [Ag ^{+} ] [ Br^{-} ]  =  [S] [ S ] = S^{2}

S = √ Ksp = √ 5. 5×10^{-5} = 7.4×10^{-3}

The solubility =7.4×10^{-3} g/L

The molar solubility is the solubility of one mole of the substance.

Since ,  one mole of AgBr is dissociates and form one mole of each  Ag ^{+} and Br^{-} ion . So, solubility is equal to molar solubility but unit is different.

Molar solubility = 7.4×10^{-3} mol/L = 7.4×10^{-3} M

To learn more about molar solubility ,

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7 0
1 year ago
You add 100. 0 g of water at 60. 0°c to 100. 0 g of ice at 0. 00°c. Some of the ice melts and cools the water to 0. 00°c. When t
LuckyWell [14K]

The Mass of ice is 69.12g.

What is mass?

It is a dimensionless quantity that expresses a particle or object's mass. The accepted unit of mass under the International System (SI) is the kilogram.

What is temperature?

Temperature is a measure of the average kinetic energy of the particles inside an object. The temperature increases cause these particles to move more quickly. It is possible to measure temperature using a thermometer or a calorimeter.

first calculate the amount of heat as follows;

q= mass of water C= (0°C-55°C)

=100.0g (4.186J/g°c) (-55°C)

=-23023J

Heat lost by water is gained by ice,

-q=m*ΔH

-23023J= m*333J/g

= 69.12g

Therefore, Mass of ice is 69.12g.

Learn more about mass from the given link.

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6 0
2 years ago
f a neutral atom has a mass of 15 amu and an atomic number of 7, determine the number of protons, neutrons, and electrons in the
Aleksandr-060686 [28]
I'm pretty sure there are 5 neutrons and 5 protons and all together they make an electron
8 0
4 years ago
Which atomic particle determines the name of the element you build?
lyudmila [28]

Hey there!

Protons determine the name of the element you build.

Protons are the particle that determines many things about the element.

The number of protons is the atomic number of an element, which is found on the periodic table.

Hope this helps!

8 0
3 years ago
A cylindrical specimen of some metal alloy having an elastic modulus of 129 GPa and an original cross-sectional diameter of 4.4
miss Akunina [59]

Explanation:

The cross-sectional area of the specimen is calculated as follows.

         A_{o} = \frac{pi}{4} d^{2}

                     = \frac{3.14}{4} \times (\frac{4.4}{1000})^{2}

                     = 1.5197 \times 10^{-5} m^{2}

Equation of stress is as follows.

              \sigma = \frac{F}{A_{o}}

And, the equation of strain is as follows.

             \epsilon = \frac{\Delta l}{l_{o}}

Hence, the Hook's law is as follows.

              E = \frac{\sigma}{\epsilon}

       E = \frac{\frac{F}{A_{o}}}{\frac{\Delta l}{l_{o}}}

          = \frac{F \times l_{o}}{A_{o} \times \Delta l}

or,    l_{o} = \frac{E \times \Delta l \times A_{o}}{F}          

                   = \frac{129 \times 10^{9} \times \frac{0.48}{1000} \times 1.662 \times 10^{-5}}{1570}

                  = 0.6554 m

or,         l_{o} = 655.4 mm

Thus, we can conclude that the maximum length of the specimen before deformation if the maximum allowable elongation is 0.48 mm is 655.4 mm.

5 0
4 years ago
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