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Ulleksa [173]
3 years ago
13

PLZ HELP ASAP !!!!!!

Chemistry
2 answers:
frosja888 [35]3 years ago
6 0

Answer: Option (B) is the correct answer.

Explanation:

Radiation involves transfer of energy or heat with the help of electromagnetic waves.

For example, radiations from Sun help in transfer of energy or heating of object on which it falls. Like, when radiations are falling on a metal rod then after sometime the rod becomes hot due to absorption of radiations from the Sun.

Thus, we can conclude that Sunlight travels through space without the aid of fluids or solids describes how heat is transferred by radiation

ICE Princess25 [194]3 years ago
5 0

Answer:

C. Sunlight travels through space without the aid of fluids or solids.

Explanation:

I took the test here is proof:

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Using the thermodynamic information in the ALEKS Data tab, calculate the standard reaction free energy of the following chemical
julia-pushkina [17]

Answer:

43.0 kJ

Explanation:

The free energy (ΔG) measures the total energy that is presented in a thermodynamic system that is available to produce useful work, especially at thermal machines. In a reaction, the value of the variation of it indicates if the process is spontaneous or nonspontaneous because the free energy intends to decrease, so, if ΔG < 0, the reaction is spontaneous.

The standard value is measured at 25°C, 298 K, and the value of free energy varies with the temperature. It can be calculated by the standard-free energy of formation (G°f), and will be:

ΔG = ∑n*G°f products - ∑n*G°f reactants, where n is the coefficient of the substance in the balanced reaction.

By the balanced reaction given:

2NOCl(g) --> 2NO(g) + Cl2(g)

At ALEKS Data tab:

G°f, NOCl(g) = 66.1 kJ/mol

G°f, NO(g) = 87.6 kJ/mol

G°f, Cl2(g) = 0 kJ/mol

ΔG = 2*87.6 - 2*66.1

ΔG = 43.0 kJ

6 0
3 years ago
Explain mole concept using any real life example
andrew-mc [135]

Answer:

for instance :

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in that their respective molecules are composed of hydrogen and oxygen atomd . hope its helpful . Good luck :)

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Which best describes the asteroid belt
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i think that the answer is d. millions of small rocky objects

5 0
3 years ago
Read 2 more answers
HELP PLZ!!!!!
Molodets [167]

The answer would be c as the cart is not in motion therefor ruling out kinetic and it is completely at rest making all of it energy potential

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How do you prepare 1 liter of a 0.5 molar glucose solution?
riadik2000 [5.3K]
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6 0
3 years ago
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