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Alexandra [31]
2 years ago
15

In a beaker a compartment a has 25% glucose solution and compartment b has 5% glu glucose solution. The membrane is permeable to

the solvent but not to the solute. What transport mechanism causes water to move from a to
Chemistry
1 answer:
dem82 [27]2 years ago
7 0

Answer is: osmotic pressure.

The direction of osmotic pressure is always from the side with the lower concentration of solute to the side with the higher concentration, in this example, from solution b (5% glucose) to solution b (25% glucose).

Osmotic pressure, alongside the vapor pressure depression, freezing point depression and the boiling point elevation are the colligative properties od solution.

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What is the partial pressure of radon if the total pressure is 780 torr and the
Brilliant_brown [7]

Answer:

0.03atm

Explanation:

Given parameters:

Total pressure  = 780torr

Partial pressure of water vapor  = 1.0atm

Unknown:

Partial pressure of radon  = ?

Solution:

A sound knowledge of Dalton's law of partial pressure will help solve this problem.

The law states that "the total pressure of a mixture of gases is equal to the sum of the partial pressures of the constituent gases".

Mathematically;

           P_{t}   =   P_{1}  + P_{2}   +   P_{n}

Since the total pressure is 780torr, convert this to atm;

                       760torr = 1 atm

                       780torr  = \frac{780}{760} atm  = 1.03atm

     For this problem;

Total pressure  = Partial pressure of radon + Partial pressure of water vapor

            1.03 = Partial pressure of radon + 1.0

  Partial pressure of radon  = 1.03 - 1.00  = 0.03atm

6 0
3 years ago
Which element is least likely to undergo a
aleksley [76]
The element which is least likely to undergo a chemical reaction is (4) neon.
The reason for this is because neon is a noble gas, which means that it doesn't react with other elements as well.
5 0
3 years ago
2022
Lapatulllka [165]

Answer:

OOO

Explanation:

OOOOOO

8 0
2 years ago
What are the total valence electrons for KCN? (show all work)
harkovskaia [24]

Answer:

Potassium (K) has 1 valence electron Lewis structure is Nitrogen (N) has 7 valence electrons Lewis structure is Carbon (C) has 6 valence electrons Lewis structure is Then the lewis structure of KCN is Electrons of potassium, nitrogen and carbon are shown by dark circle, dark square and crosses respectively.

Explanation:

4 0
2 years ago
Using the equation 2H2 + O2 --> 2 H2O, if 192 g of O are produced, how many grams of hydrogen must react with it? Help me und
Mamont248 [21]
<span>To produce a molar conversion, you need to know the molar mass of each molecule. I presume you mean there are 192 grams of O2. The molecular weight of oxygen is 16 g/mol. Therefore, O2 is 32 g/mole.

   If there are 192 grams of O2, then:
 192 grams x (1 mole/32g) = 6 moles of O2.

   To react each mole of oxygen, you need 2 moles of hydrogen (H2). You can see this in the equation 2H2 + O2 --> 2 H20.
   To react 6 moles of O2, you need 12 moles of H2.
   Now that we have the total moles of hydrogen needed, we now use the molar mass of H2 (2 grams/mole)
   12 moles H2 x (2 grams/1 mol H2) = 24 grams of H2.</span>
4 0
2 years ago
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