Answer: 6.58g
Explanation: We are to find the mass of NaCl that can produce 15% solution in a 750ml
STEP 1:
the reaction moles
NaCl + H2O = NaOH + HCl
Therefore 1mole of NaCl reacts with 1mole of H2O
STEP 2:
convert 750ml to liter
750ml × 1L/1000ml = 0.750L
STEP3 :
convert percentage concentration to mol/L
15% = 0.15mol/L
STEP 4:
find the mole
Mole= concentration× volume
0.15mol/L × 0.75L =0.1125mol
STEP 5 :
Find the mass
Mass = mole × molar mass
The molecular mass of NaCl is 23+35.5= 58.5g/mol
Therefore:
0.1125mol × 58.5g/mol = 6.58g
Approximately: 6.6g
Answer:
tetrafluoroethane
Explanation:
Its an HCFC, which are the refrigerants that destroy the ozone layer.
Answer:
Work done on the system is zero , hence no work is done since the process is <u>isochoric.</u> There is no work done if the volume remains unchanged. (Though the temperature rises, work is only accomplished when the volume of the gas changes.)
Explanation:
ISOCHORIC PROCESS - An isochoric process, also known as a constant-volume process, isovolumetric process, or isometric process, is a thermodynamic process in which the volume of the closed system undergoing the process remains constant through the process. The heating or cooling of the contents of a sealed, inelastic container is an example of an isochoric process. The thermodynamic process is the addition or removal of heat, the closed system is established by the isolation of the contents of the container, and the constant-volume condition is imposed by the container's inability to deform. It should be a quasi-static isochoric process in this case.
<u>Hence , the work done in the system is zero.</u>
