Your answer is choice C. That is solid sodium chloride never dissolves to form sodium ions and chloride ions.
Going further to explain, have a look at the question again, we are told that James Proton prepares a saturated solution of sodium chloride in a beaker by adding solid sodium chloride and stirring.
Then when James finishes, crystals of sodium chloride are observed at the bottom of the beaker.
This implies that no more salt was dissolving since the saturation point was reached.
Again suppose he increased the temperature of the reaction, more salts could have dissolved.
Answer:
27.2atm
Explanation:
Data obtained from the question include:
V1 (initial volume) = 27.2mL
P1 (initial Pressure) = 1atm
V2 (final volume) = 1mL
P2 (final pressure) =?
Since the temperature is constant, the gas is obeying Boyle's law.
Mathematically, Boyle's law is expressed as:
P1V1 = P2V2
1 x 27.2 = P2 x 1
P2 = 27.2atm
The final pressure is 27.2atm.
Therefore, the pressure needed to compress the gas is 27.2atm
Answer is: B because it has a lower activation energy.
For all chemical reaction some energy is required and that energy is called activation energy (energy that needs to be absorbed for a chemical reaction to start), activation energy for reaction B is lower that for reaction A.
Catalysis is the increase in the rate of a chemical reaction due to the participation of an additional substance called a catalyst.
Chemical reactions occur faster with a catalyst because they require less activation energy.
Answer:
<em>Why does metal reactivity increase as you move from right to left on the periodic table? That is why as you go up a group Chemical Reactivity increases </em>
<h3><u>because it is easier for elements to gain electrons when they have high electronegativity.</u></h3>
To convert temperature in terms of kelvin to celsius, we subtract 273 to the given temperature in kelvin. In this problem, the given is 49 kelvin, thus, 49 - 273 is equal to -224 degrees celsius. The asnswer is <span>-224 degrees celsius. Kelvin is the SI unit for temperature.</span>