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A 9.82 -g sample of pure liquid is vaporized at 193 °C and 172 torr. At...
A 7.65 -g sample of pure liquid is vaporized at 194 °C and 186 torr. At these conditions it occupies 3.62 L. What is the molar mass of the substance? __g/mol
A sample of 80.0 mL of krypton gas, Kr, is at 756 torr and 18.5°C. What is the new volume if the pressure is decreased to 185 torr and the temperature is decreased to 11.0°C? .. A 5.00 L container of nitrogen (N2) gas has a pressure of 0.92 atm and a temperature of 105°C. How many grams of nitrogen are in the container?
Problems Section 1. A 0.678 gram sample of gas occupies 0.214 L at standard conditions, what is the molar mass of the gas? PronRT 1 (0,214) = NA 273.15 n = R-273.15 n=104,684 -:675 X=18 2. A sample of gas occupies 250 mL at 37°C and 730. torr, what volume would the gas occupy at standard conditions? ,250L 310k 730 + 20.5 10.0206-310 .216L n=0.0094396539 V nr. 273.15 = 2115 3. A 5.00 mL sample of an unknown liquid is...
A 0.704-g sample of a colorless liquid was vaporized in an evacuated 250.-mL flask at 121°C to give a pressure of 786 mmHg. What is the molecular weight of this substance? Molecular weight = amu
Question 10 of 22 A 4.05 g sample of an unknown gas at 35 °C and 1.05 atm is stored in a 2.15 L flask. What is the density of the gas? density: 1.88372 g/L What is the molar mass of the gas? molar mass: g/mol Incorrect Question 14 of 22 A gas mixture is made by combining 6.7 g each of Ar, Ne, and an unknown diatomic gas. At STP, the mixture occupies a volume of 15.14 L. What...
step by step please EXPERIMENT 10 DATE y lonelisto TODPNAME SECTION OEM omdat POSTLABORATORY ASSIGNMENT 1. What is the density of xenon gas at standard conditions? 2. What is the volume that is occupied by 0.819 g of helium at standard conditions? Robin 3. Ozone, a component of smog, is a toxic substance that consists of only oxygen atoms. If ozone has a density of 2.1 g/L at standard conditions, then what is the chemical formula of ozone? Hint: Determine...
A gaseous sample of a compound has a gas density of 0.647 g/L at 694 torr and 20 °C. What is the 4. molar mass of this compound? If this compound contains only nitrogen and hydrogen, and is 82.2% nitrogen by mass, what is its molecular formula? 5. What is the density in g/L of neon gas at STP?
a sample containing 2.5g liquid diethyl A sample containing 2.50 g liquid diethyl ether is cooled from 25.5 C to 3.5 c. The substance remains in the lquid phase throughout this change. Select all the options that correctly reflect the calculations needed to determine q for this process. Determine q for this process (C for liquid diethyl ether 172 J/mol-K and its molar mass is 74.12 g/mol) A sample contalining 2.50 g liquid dlethyl ether is cooled from 25.5 C...
A sample of an unknown compound is vaporized at 200 °C. The gas produced has a volume of 2070. mL at a pressure of 1.00 atm, and it welghs 7.32 g. Assuming the gas behaves as an ideal gas under these conditions, calculate the molar mass of the compound. Round your answer to 3 significant digits.
A sample of an unknown compound is vaporized at 170. "C. The gas produced has a volume of 1750. mL. at a pressure of 1.00 atm, and it weighs 1.54 g Assuming the gas behaves as an ideal gas under these conditions, calculate the molar mass of the compound. Round your answer to 3 significant digits. mol