Well, for one thing, they ensure that a scientist can't claim a certain result, which might be biased and thus inaccurate, because he or she is being paid by, say, big business interests. For another, they ensure that medicines or treatments can't be made available to the public without thorough testing, replication, and peer review.
Answer:
Potassium-40 (40K) is a radioactive isotope of potassium which has a long half-life of 1.251×109 years. It makes up 0.012% (120 ppm) of the total amount of potassium found in nature.
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Potassium-40.
General
Natural abundance 0.0117(1)%
Half-life 1.251(3)×109 y
Parent isotopes Primordial
Decay products 40Ca (β−) 40Ar (EC, γ; β+)
Answer:
Enthalpy change is 6007 J
Entropy change is
Gibb's free energy change is 0 J.
Explanation:
From the given,
The enthalpy change for the melting of ice =
Temperature =
Let's convert the temperature centigrade into Kelvin.
Number of moles of ice = 1.00 mol
Enthalpy change of 1.00 mol temperature
Therefore, Enthalpy change () for the melting of 1.00 mole of ice at temperature is 6007 J.
Entropy change for the melting of 1.00 mole of ice at :
Therefore, Entropy change() for the melting of 1.00 mole of ice at temperature is .
The Gibb's free energy change is expressed by the following formula.
Therefore, Gibb's free enrgy change () for the melting of 1.00 mole of ice at temperature is
Red blood cells are the carriers of oxygen from the lungs to everywhere else
in the body. If there is a high count of red cells in the blood, then <span>high levels
of oxygen will be available to the muscles.</span>