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OverLord2011 [107]
3 years ago
12

Question 7 of 32

Chemistry
1 answer:
Mice21 [21]3 years ago
4 0

Answer:

The primary type of energy change which occurs by turning on the phone will be the conversion of the stored chemical energy of the battery into electrical energy. The chemical energy is also converted into light energy, sound energy and heat energy. With the passage of time, the energy will be changed back into the chemical energy when we will charge the phone again.

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Fungi have eukaryotic cells (large cells with a nucleus), like animals and plants<br> True or false?
Serggg [28]
True your answer is true
8 0
3 years ago
Hydrogen gas can be prepared by reaction of zinc metal with aqueous HCl:
kow [346]

Answer:

The volume of hydrogen gas generated by given reaction is 9.48 L

Explanation:

Firstly, we calculate the mole of Zinc added, n = 25.5 / 65 = 0.392 mol

With the same equivalent, the mole of generated hydrogen gas will be the same, at 0.392 mol.

Secondly, we get the equation

<em>P . V = n . R . T</em>

with P (pressure, atm), V (volume, litre), n (mole, mol), R (ideal gas constant, 0.082), T (temperature, Kelvin)

So we have to convert the given information to correct unit

P = 742 mmHg = 0.976 atm

T = 15 °C = 288 K

Hence we can calculate the generated volume by

V = n . R . T / P = 0.392 x 0.082 x 288 / 0.976 = 9.48 L

3 0
3 years ago
Based on the chemical equation, use the drop-down menu to choose the coefficients that will balance the chemical equation:
zzz [600]

Answer:

1

1

1

1

Explanation:

the equation is balancing

4 0
3 years ago
Read 2 more answers
What is the effect of the repetition of the word “dead” in this line?
drek231 [11]
<span> quotation from "A Psalm of Life."

Let the dead past bury its dead!
</span><span> effect of the repetition of the word “dead” in this line is that </span>t reinforces the idea that one should live in the present, not in the past.
hope this helps
3 0
3 years ago
What steps have power plants taken to reduce the amount of sulfur oxides released into the air?
Ann [662]
Emissions of SO2 generated during the combustion of fossil fuels can be reduced<span> by treating the flue gases before they are emitted into the atmosphere via the stack; this is termed Flue Gas Desulphurisation (FGD). Flue gas desulphurisation systems can be classified as either Regenerable or Non-regenerable.

I hope my answer has come to your help. God bless and have a nice day ahead!
</span>
5 0
3 years ago
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