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Advocard [28]
3 years ago
6

Which two statements describe organ systems working together to remove

Chemistry
1 answer:
Nesterboy [21]3 years ago
4 0
I think the answer is D
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A user is constructing an ionic bond between beryllium and chlorine and has reached the stage below what should the user do next
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It seems that you have missed the given choices for this question, but anyway, here is the correct answer. If a user is constructing an ionic bond between beryllium and chlorine and has reached the stage below, the user should t<span>ransfer an electron from the beryllium atom to the chlorine atom. Hope this is the answer that you are looking for.</span>
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Which example best demonstrates Charles’s law?
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A

Explanation:

The Charles law states that the volume of an ideal gas increases when temperature is increased under constant pressure. The pressure inside the balloon is always equal to the atmospheric pressure. Therefore answer A demonstrate the Charles law.

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The model below shows the equation that represents how hydrogen and oxygen combine to form water. In this chemical reaction, the
Effectus [21]

Answer:

true

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because they are balance

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Which statement about Bohr’s model of the atom is false?
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3 years ago
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The vapor pressure of pure water at 250C is 23.77 torr. What is the vapor pressure of water above a solution that is 1.500 m glu
Olegator [25]

Answer:

Vapor pressure of water = 23.14torr

Explanation:

When you made a solution, vapor pressure decreases following Raoult's law:

P_{solution} = X_{solvent} P_{solvent}

<em>Where P is vapor pressure and X mole fraction</em>

As vapor pressure of water is 23.77torr we must find the mole fraction of water knowing the solution is 1.500m glucose (That is 1.500 moles of glucose per kg of water = 1000g of water).

1000g of H₂O are, in moles (Molar mass: 18.02g/mol):

1000g H₂O ₓ (1mole / 18.02g) = 55.5 moles of H₂O.

As we know now the solution contains 55.5 moles of water and 1.5 moles of glucose. Thus, mole fraction of water (Solvent) is:

X_{H_2O} = \frac{55.5molesH_2O}{55.5molesH_2O + 1.5 molesGlucose} = 0.9737

Replacing in Raoult's law, pressure of water above the solution is:

P_{solution} = X_{solvent} P_{solvent}

P_{solution} = 0.9737*23.77torr

<h3>Vapor pressure of water = 23.14torr</h3>
7 0
3 years ago
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