Answer:
Mass = 90.28 g
Explanation:
Given data:
Mass of Ca(OH)₂ = ?
Volume of solution= 1.5 L
Molarity of solution = 0.81 M
Solution:
First of all we will calculate number of moles.
Molarity = number of moles / volume in L
by putting values,
0.81 M = Number of moles / 1.5 L
Number of moles = 0.81 M × 1.5 L
Number of moles = 1.22 mol
Mass of Ca(OH)₂ in gram:
Mass = number of moles × molar mass
Mass = 1.22 mol × 74.09 g/mol
Mass = 90.28 g
 
        
             
        
        
        
Answer:
Melting  is the process of being changed from a solid to a liquid state especially by the application of heat. This occurs when the energy of the solid increases, which increases the substance's temperature to the melting point.  Typically, the solids energy increases by the application of heat or pressure. At the melting point, the ordering of molecules in the solid breaks down to a less ordered state, and the solid "melts" to become a liquid.
hope this helps! :)
 
        
             
        
        
        
Answer:
The answer to your question is   P2 = 170.9 torr
Explanation:
Data
Volume 1 = 12.1 l                                Volume 2 = 21.1 l
Temperature 1 = 241 °K                      Temperature 2 = 298°K
Pressure 1 = 546 torr                           Pressure 2 = ?
Process
To solve this problem use the combined gas law.
                 P1V1/T1 = P2V2/T2
-Solve for P2
                 P2 = T1V1T2 / T1V2
-Substitution
                 P2 = (241 x 12.1 x 298) / (241 x 21.1)
-Simplification
                 P2 = 868997.8 / 5085.1
-Result
                 P2 = 170.9 torr
        
 
        
             
        
        
        
If a solution is saturated, that means it already posses the maximum number of solutes thus have been dissolved in it, and thus the concentration cannot be increased.