Given:
P = 1.0 atm
V = 629.0 mL
= (629.0/1000) L
= 0.629 L
T = 23.0 oC
= (23.0+273) K
= 296 K
find number of moles using:
P * V = n*R*T
1 atm * 0.629 L = n * 0.0821 atm.L/mol.K * 296 K
n = 2.59*10^-2 mol
mass(solute)= 1.81 g
use:
number of mol = mass / molar mass
2.59*10^-2 mol = (1.81 g)/molar mass
molar mass = 69.9 g/mol
Answer: 69.9 g/mol
A sample of gas of mass 1.81g occupies a volume of 629mL at 23°C and 1...
Question 1 What is the molar mass of 3.7 g of an unknown gas that occupies 450 mL at 20.0°C and 2.0 atm? The value of R = 0.0821 L atm mol-1 k-19
A sample of gas of mass 1.58 g occupies a volume of 472 mL at 55 °C and 0.92 atm pressure. What is the molar mass of the gas? VALD ? g/mol
A sample of gas of mass 2.14 g occupies a volume of 464 mL at 49 °C and 0.61 atm pressure. What is the molar mass of the gas? |ν ΑΣφ ? g/mol Submit Request Answer
Part A A sample of gas of mass 3.90 g occupies a volume of 728 mL at 37 °C and 1.97 atm pressure. What is the molar mass of the gas? IVO AEQ O 2 ? g/mol Submit Request Answer
please help! thank you A certain mass of nitrogen gas occupies a volume of 8.82 L at a pressure of 7.80 atm. At what pressure will the volume of this sample be 11.20 L? Assume constant temperature and ideal behavior. A sample of an ideal gas has a volume of 3.60 L at 14.40 °C and 1.60 atm. What is the volume of the gas at 19.80'C and 0.986 atm? V = If 73.5 mol of an ideal gas occupies...
Score: 11.7% Resources Hint 5 of 23 > A certain mass of nitrogen gas occupies a volume of 7.23 L at a pressure of 2.56 atm. At what pressure will the volume of th Sample be 9.61 L? Assume constant temperature and ideal behavior can G ; 3 4 5 6 s o WERYU TOP 's F G H I K BN MET M command option
1.) A sample of neon gas occupies a volume of 7.59 L at 65.0°C and 387 torr. If the volume of the gas sample is decreased to 6.56 L, while its temperature is decreased to 3.0°C, the resulting gas pressure will be torr. 2.)A sample of xenon gas occupies a volume of 8.71 L at 41.0°C and 1.25 atm. If it is desired to decrease the volume of the gas sample to 6.54 L, while increasing its pressure to 1.55...
Classwork: Ch. Gases Name 1. A sample of chlorine gas occupies a volume of 946 mL at a pressure of 726 mmg What is the pressure of the gas (in mmHg) if the volume is reduced at constant temperature to 154 ml? 2. A sample of carbon monoxide gas occupies 3.20 L at 125°C. At what temperature will the gas occupy a volume of 154 Lif the pressure remains constant? 3. What is the volume (in liters) occupied by 49.8...
2) Consider a sample of gas that occupies 23.1 L at 1.13 atm. What volume will the same sample occupy if the pressure is increased to 3.05 atm while the temperature is held constant? 3) A fixed sample of gas occupies 25.9 mL at 211.3 K. What volume will the gas occupy at 336.6 K? 4) A fixed sample of gas exerts a pressure of 580 Torr at 284 K. What will the pressure be (in atm) if the temperature...
A sample of helium gas at a pressure of and a temperature of, occupies a volume of. If the gas is allowed to expand at constant temperature to a volume of, the pressure of the gas sample will be atm. от и се спес 0 accc Ппрола напис п псиса по иппо чистио. A sample of helium gas at a pressure of 0.805 atm and a temperature of 26.2°C, occupies a volume of 16.1 L. If the gas is allowed to...