Molarity of aqueous solution is 1.9 M
The molarity in given case can be calculated by the formula -
M = number of moles/Volume of solution in liters
Number of moles is further calculated by the formula -
Number of moles = mass/molar mass
As we know, molar mass of ethanol is 46 g/mol
Keep the values in formula to calculate number of moles.
Number of moles =
Number of moles = 0.02
As we know, 1000 ml = 1l
So, 10.5 ml = 0.0105 l
Keep the values in formula of molarity to calculate the molarity -
Molarity =
Molarity = 1.9 M
Hence, the molarity of given aqueous solution is 1.9 M.
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Answer:
50mL
Explanation:
Using Boyle's law equation as follows:
P1V1 = P2V2
Where;
P1 = initial pressure (torr.)
P2 = final pressure (torr.)
V1 = initial volume (mL)
V2 = final volume (mL)
According to the information provided in the question,
V1 = 25.0mL
V2 = ?
P1 = 760 torr.
P2 = 380 torr.
Using P1V1 = P2V2
V2 = P1V1//P2
V2 = (760 × 25) ÷ 380
V2 = 19000 ÷ 380
V2 = 50mL
Answer:
Explanation:
Balanced forces are opposite in direction and equal in size.
Balanced forces are in a state of equilibrium.
The correct answer would be Sodium! I look up the flash card and got this! I hope this helps and I hope you have an amazing day!