All categories

3 years ago

Osmosis

1 answer:

5 0

When does it happen?
Osmosis provides the basic procedure by which water is transported into and out of cells. Osmosis just spontaneously happens when there is an imbalance in solute concentration inside and outside the cell membrane. Osmosis provides the basic procedure by which water is transported into and out of cells.

Where does it happen?
Osmosis happens between, inside, and outside the cell membrane.

How does it happen?
Solvent molecules move from an area of high concentration to lower concentration through a semipermeable wall or membrane.

Why does it happen?
<span>It happens in order to have solute concentration balance and to equalize the level of it between in and out of the semipermeable membrane</span>

You might be interested in

Give the nuclide symbol for an atom that has<br> mass number 64 and 35 neutrons.

azamat

The mass number represents the summation of the number of protons and the number of neutrons in the nucleus of an atom.
We are given that the mass number is 64 and that the number of neutrons is 35. Therefore:
number of protons = 64 - 35 = 29 protons

In ground state, number of protons in an atom is equal to the number of electrons. Therefore,
number of electrons = 29 electron

Using the periodic table, we will find that the element that has 29 electrons in ground state is copper.
The nuclide symbol of copper is shown in the attached image.

5 0

4 years ago

How much energy would be produced from the reaction of 2.40 moles hydrogen with 3.95 moles chlorine? ___ H2 + ___ Cl2 ___ HCl ΔH

True [87]

Answer:

How much energy would be produced from the reaction of 2.40 moles hydrogen with 3.95 moles chlorine?

$H_2 + Cl_2 -> 2HCl , deltaH = -554 kJ$

Explanation:

Given,

2.40 moles hydrogen reacts with 3.95 moles chlorine.

From the balanced chemical equation,

1mol. of H2 reacts with 1mol. of Cl2

then,

2.40mol. of H2 reacts with ----?mol of Cl2

$=>2.40 mol. H2 * \frac{1mol. Cl2}{1mol. H2} \\=2.40 mol. Cl2$

So, the remaining moles of Cl2 is in excess.

The limiting reagent is--- H2.

1mol. of H2 releases --- 554kJ of energy

then,

2.40mol of H2 releases ---- ?

$=>2.40mol * \frac{554kJ}{1 mol.} \\=1329.6kJ$

Answer is: deltaH =-1329.6kJ

3 0

3 years ago

Hello everyone! I have a question about science;

kolezko [41]

C because 20 -10 is 10

4 0

3 years ago

Lithium Iodide Has A Lattice Energy Of −7.3×102kJ/mol And A Heat Of Hydration Of −793kJ/mol. Lithium iodide has a lattice energy

daser333 [38]

Answer:

Heat of solution= - 63KJ/mole

Heat evolved = - 18.82KJ

Explanation:Heat of solution = Heat of solute + Heat of hydration

◇Hsoln = - ( - 7.3 × 10 ^ 2) + ( - 793 ) KJ / mol

◇H soln= - 63 KJ

Use enthalpy of solution equation to determine the enthalpy of solution for LiI

LiI ---> Li^ + + I^-

Molecular mass of LiI=133.85g

The chemical equation for the dissociation will be:

40gLiI (1molLiI)/133.85g LiI - 63KJ/1 mol LiI

18.82KJ

The heat was evolved because the value of enthalpy was negative

6 0

3 years ago

What is the molarity of a solution with 130g of CoCl2 in 1/2 liter? (can you show the steps please)

Elden [556K]

Answer:

Explanation:

M=mol/L

1. Find moles of CoCl2

mass of substance/molar mass = 130/129.833 = 1.001 mol

3. Substitute in molarity equation

M=(1.001/0.5)

M= around 2M

7 0

3 years ago