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timofeeve [1]
3 years ago
11

Which one of these is not an example of intracellular communication?

Chemistry
2 answers:
notsponge [240]3 years ago
8 0
Pretty sure it would be "B" because there is no communication involved just simply the white cells producing antibodies.
gulaghasi [49]3 years ago
8 0

The answer is "B"  chemical messengers dock onto receptors of adrenal gland.

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Which of the following best defines the internal energy of a system?
Anarel [89]
 <span>In thermodynamics, the internal energy of a thermodynamic system, or a body with well-defined boundaries, denoted by U, or sometimes E, is the total of the kinetic energy due to the motion of molecules (translational, rotational, vibrational) and the potential energy associated with the vibrational and electric energy of atoms within molecules or crystals. It includes the energy in all the chemical bonds, and the energy of the free, conduction electrons in metals.</span>
7 0
3 years ago
For the reaction of hydrogen with iodine
fenix001 [56]

Answer:

r_{H_2} = \frac{-1}{2} r_{HI}

Explanation:

Hello!

In this case, considering the given chemical reaction:

H_2(g) + I_2(g) \rightarrow 2HI(g)

Thus, by applying the law of rate proportions, we can write:

\frac{1}{-1} r_{H_2} = \frac{1}{-1}r_{i_2} = \frac{1}{2} r_{HI}

Whereas the stoichiometric coefficients of reactants are negative due their disappearance and that of the product is positive due to its appearance. In such a way, when we relate the rate of disappearance of hydrogen gas to the rate of formation of hydrogen iodide, we obtain:

r_{H_2} = \frac{-1}{2} r_{HI}

Best regards!

8 0
2 years ago
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18)
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Sorry wasn’t sure about some of them in #18
Hope the notes are helpful.

8 0
3 years ago
While doing a distillation, Farha heats the mixture too fast, and the temperature rises too quickly. If the mixture is composed
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D as the two substances could have close boiling points, so if the temperature is not controlled well, both substances will evaporate.
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