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AysviL [449]
2 years ago
7

Exposure to what type of radiant energy is sensed by human skin as warmth?

Chemistry
2 answers:
larisa86 [58]2 years ago
3 0
The answer is C.gamma rays
Hatshy [7]2 years ago
3 0
I think it is gamma rays as well so id go with c.

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For the reaction C2H4(g) + H2O(g) --> CH3CH2OH(g)
Dominik [7]

Answer : The value of equilibrium constant for this reaction at 262.0 K is 3.35\times 10^{2}

Explanation :

As we know that,

\Delta G^o=\Delta H^o-T\Delta S^o

where,

\Delta G^o = standard Gibbs free energy  = ?

\Delta H^o = standard enthalpy = -45.6 kJ = -45600 J

\Delta S^o = standard entropy = -125.7 J/K

T = temperature of reaction = 262.0 K

Now put all the given values in the above formula, we get:

\Delta G^o=(-45600J)-(262.0K\times -125.7J/K)

\Delta G^o=-12666.6J=-12.7kJ

The relation between the equilibrium constant and standard Gibbs free energy is:

\Delta G^o=-RT\times \ln k

where,

\Delta G^o = standard Gibbs free energy  = -12666.6 J

R = gas constant  = 8.314 J/K.mol

T = temperature  = 262.0 K

K = equilibrium constant = ?

Now put all the given values in the above formula, we get:

-12666.6J=-(8.314J/K.mol)\times (262.0K)\times \ln k

k=3.35\times 10^{2}

Therefore, the value of equilibrium constant for this reaction at 262.0 K is 3.35\times 10^{2}

3 0
3 years ago
How many different compounds are possible, changing only the cis/trans arrangements around these two double bonds?
insens350 [35]
Check the attached file for the answer.

3 0
2 years ago
A solution of potassium hydroxide reacts completely with a solution of nitric acid. What solid mixture does it create?
KIM [24]

Answer:

\boxed{\text{KNO}_{3}}

Explanation:

The reaction is

KOH(aq) + HNO₃(aq) ⟶ KNO₃(aq) + H₂O(ℓ)

If you evaporate the water, the solid substance is the compound, potassium nitrate.

\boxed{\textbf{KNO}_{3}}

KNO₃(aq) ⟶ KNO₃(s)

4 0
2 years ago
Why are intensive properties useful for identifying a substance?
Lesechka [4]

Answer:

d

They do not depend on the amount of substance you have.

3 0
2 years ago
When an acid like HCl dissociates in water, it essentially is ________.Select one:a. making the water more basicb. raising the p
jeyben [28]

1) Acidic solution. An acidic solution has a high concentration of H+ ions.

2) Basic solution. A basic solution has a high concentration of OH- ions.

3) HCl chemical reaction.

HCl+H_2O\rightarrow H_3O^++Cl^-

You can also write it as follows

HCl+H_2O\rightarrow H^++Cl^-

4) pH scale.

When the concentration of H+ is high, the solution is acidic. H+ lowers the pH of the solution.

Option D.

3 0
1 year ago
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