Answer:
The molarity of the solution: 0,27M
Explanation:
First , we calculate the weight of 1 mol of NaCl:
Weight 1mol NaCl= Weight Na + Weight Cl= 23 g+ 35, 5 g= 58, 5 g/mol
58,5 g---1 mol NaCl
64 g--------x= (64 g x1 mol NaCl)/58,5 g= 1, 09 mol NaCl
A solution molar--> moles of solute in 1 L of solution:
4 L-----1,09 mol NaCl
1L----x0( 1L x1,09 mol NaCl)/4L =0,27moles NaCl--->0,27M
Answer:
Explanation:
Which is more reactive hydrogen or oxygen?
Hydrogen is not particularly reactive. For example, just mixing hydrogen and oxygen gas will not cause a reaction at room temperature, but many metal elements oxidize at least on the surface in air. ... It is combustible because oxygen wants electrons and takes them from hydrogen to form water.
The kinetic energy of gas particles depends on temperature. Greater the temperature higher will be the average kinetic energy
Kinetic energy is related to the temperature as:
KE = 3/2 kT
where k = Boltzmann constant
T = temperature
In the given example, since the temperature of O2 gas is maintained at room temperature, the average KE will also remain constant.
The fifth postulate of the kinetic molecular theory which states that the temperature of the gas depends on the average KE of the particles of the gas explains the above observation.
The given question is incomplete. The complete question is as follows.
If more sugar were added to the solution on the left side of the tube, what would happen to the water level on the right side of the tube?
- There is more solute in the left arm of the tube than in the right arm of the tube.
- There is less free water in the right arm of the tube than in the left arm of the tube.
- Water is tightly clustered around the hydrophilic solute molecules on both sides of the membrane.
- Solutes can pass through the selectively permeable membrane from right to left, but free water cannot.
Explanation:
It is known that when water is able to diffuse through a semi-permeable membrane from a region of high water concentration to low water concentration is called osmosis.
Since, more amount of solute is present on the right side of the tube so, there will be less amount of free water present over there as compared to the left side of the tube.
Also, water will be clustered around the hydrophilic solute molecules which is present on both sides of the membrane.
Thus, we can conclude that the true statements are as follows.
- There is less free water in the right arm of the tube than in the left arm of the tube.
- Water is tightly clustered around the hydrophilic solute molecules on both sides of the membrane.
