Answer:
Molar mass = 254.60g/mol
Step-by-step explanation:
Mass = 8.02g
Volume = 812mL = 0.812L
Pressure (P) = 0.967atm
Temperature of the gas = 30°C = (30 + 273.15)K = 303.15K
Molecular weight = ?
To solve this question, we'll have to use ideal gas equation, PV = nRT
P = pressure of the gas
V = volume of the gas
n = number of moles of the gas
R = ideal gas constant = 0.082J/mol.K
T = temperature of the gas
PV = nRT
n = PV / RT
n = (0.967 * 0.812) / (0.082 * 303.15)
n = 0.7852 / 24.8583
n = 0.0315 moles
Number of moles = mass / molarmass
Molarmass = mass / number of moles
Molar mass = 8.02 / 0.0315
Molar mass = 254.60g/mol
The molar mass of the gas is 254.60g/mol
Average = Sum of numbers / Number of numbers
Average = (5 + 2 + 7 + 5.5 + 3.5 + 4 + 5 + 4.5 + 4) / 9
Average = 40.5 /9
Average = 4.5
Average = 4.5 hours.
Answer:
201 ft³ (201 cubic feet)
Step-by-step explanation:
The volume of a cylinder is given as:
V = pi * r² * h
Where r = radius of the cylinder
h = length of the cylinder.
The diameter of the cylindrical pipe, d = 4 ft
The radius of the cylindrical pipe, r = d/2 = 4 / 2 = 2 ft
The length of the cylindrical pipe, h = 16 ft
The volume of the cylindrical pipe is:
V = 3.14 * 2² * 16
V = 200.96 ft³ = 201 ft³ (to the nearest whole number)
The volume of the cylindrical pipe is 201 ft³ (201 cubic feet)
Pythagorean Theorem:
Since 10 and 24 are the legs, "x" has to be the hypoteneuse. "a" and "b" are the legs (10 and 24).
Now, replace the values in.
Hope this helped! :)
Answer:
See explanation
Step-by-step explanation:
You forgot to give the coordinates of C.
Note that, the mapping for 90° clockwise rotation around the origin is given by:
Assuming the coordinates of C were (-6,6), then the coordinates of C after a 90° clockwise rotation
around the origin is (-6,-6)