Moving on to the second issue
Let's tackle the second question first. Once you grasp that, the first question will be simpler. By the way, this is an excellent question to clarify. The concepts of less than and more than can be quite tricky in the sciences. Every question you encounter that utilizes less or more should be approached with caution.
As altitude increases, air pressure decreases (essential term: less highlight this sentence in color. Take a moment to reflect on it.)
As the pressure declines, less energy (again, key term) is required for water molecules to escape the surface. Thus, the boiling temperature is lower than it would be at sea level.
Answer to problem two: Lower
Problem One
Water reaches its boiling point when the greatest number of molecules can leave the water's surface. Equal to is the right answer. Although pinpointing the exact answer can be challenging, equal to is indeed the correct response.
Response:
D. Maximum internal cooking temperature
Clarification:
Per the Storage Ladder Protocol, proper rules must be followed when storing food in the refrigerator. Prepared dishes belong on the highest shelf; fruits and vegetables are positioned on the next; fish and seafood go on the third; beef and pork are kept on the fourth; ground meat is stored on the fifth; and poultry items sit on the bottom shelf. This illustrates that ground beef should be placed above chicken. A diagram is included below for optimal storage order explanation.
Answer:
5.57 L
Explanation:
- Apply the combined gas law formula.
- Change Celsius to Kelvin.
- Convert mmHg into atm.
- Enter the variables into the equation.
- I hope this information was beneficial! If you want, I can guide you through the process step by step.
Each molecule contains two of these ions
1 mole corresponds to 6.02 * 10^23 entities.
1 mole of (NH4)2S contains 2*6.02 * 10^23 ammonium ions (NH4+ in this instance) = 1.204 * 10^24 ammonium ions
5 moles of (NH4)2S accounts for 5 * 1.204*10^24 =
6.02 * 10^24 moles of NH4+ ions <<<<====Result
By Raoult's law:
-(1)
Where 
represents the vapor pressure measured for the solution, 
denotes the mole fraction of the solvent, and 
specifies the vapor pressure of the pure solvent.
The vapor pressure for benzene is recorded as 
(as given).
Adding a non-volatile solute decreases the vapor pressure by 10.0% (as given).
The vapor pressure of the solution component is thus given by 
.
Substituting the known values into formula (1):
The number of moles of benzene is 
.
Calculating to find moles of benzene yields 
.
Since, 
Thus, 
Therefore, the moles of non-volatile solute required is 
.
