(atomic masses: N = 14.01, H = 1.008, C = 12.01, O = 16.00). A gaseous compound is 52.14% C, 13.13% H and 34.73% O by mass. A sample of nitrogen occupies 200. mL at 27°C when the pressure is 0.500 atm. It is 58.77% C, 13.81% H, and 27.42% N. Its molar mass is 102 g/mol. What would be the pressure of this sample if it were allowed to expand to 850. mL at 25°C? A 10.0-liter vessel contains gas A at a pressure of 300. torr. Calculate the resulting pressure in torr. At standard conditions 196 mL of the gas weighs 0.385 grams. A gas consists of 14.9 % P and 85.1 % Cl. A 10.0-L flask contains 0.400 mole of H2, 0.300 mole of He and 0.500 mole of Ne at 35.0°C. A laboratory technician boils an unknown volatile liquid at 56°C and atmospheric pressure. Assuming Ideal Gas behavior, for which of the following gases does PV/nT = R, 0.08206 L atm/mol K? A gaseous compound is 78.26% boron and 21.74% hydrogen by mass. Academia.edu uses cookies to personalize content, tailor ads and improve the user experience. 10 g of hydrogen and 64 g of oxygen were filled in a steel vessel and exploded. What mass of CH4 is contained in a 500.-mL sample of CH4 at - 40.0°C and 300. torr? A 2.08-gram sample of a gaseous compound contains 1.92 grams of carbon and 0.16 gram of hydrogen. What is the volume at STP? Molar Mass of CaSiO3 Oxidation State of CaSiO3. Assume temperature remains constant. A sample of gas occupies a volume of 1.60 L at a pressure of 720. torr. What volume would it occupy at standard conditions? At constant P and n, changing the T from 100°C to 200°C causes the volume to double. Which of the following statements is false? Convert the following redox reactions to the ionic form. How many oxygen atoms are contained in a sample of O2 that occupies 1500. mL at 50.0°C and 1.00 atm pressure? Academia.edu no longer supports Internet Explorer. A 300. mL sample of neon is confined under a pressure of 0.420 atm at 15.0°C. How many moles of Argon would occupy 75 mL at 33°C and 1.07 atm? Under what pressure would this sample occupy 300. mL if the temperature were changed to 718°C? Determine the molecular formula of cadaverine. What are the units of molar mass? Q.24 Polychlorinated biphenyls, PCBs, … A sample of iron was dissolved in hydrochloric acid. What is the molecular weight of a gas if 0.104 gram of the gas occupies 48.7 mL at STP? The vapor pressure of water is 19 torr at 21°C. Which variable is not used to describe the amounts and properties of gases? Calculate the mass of a 10.-liter sample of C2H6 at 459°C under a pressure of 760. torr. Calculate the volume occupied by 37.0 grams of SO2 at 215°C and 1340 torr. The dry sample of gas had a mass of 5.60 g. What is the mass of three moles of the dry gas? A 1.60-gram sample of impure Ag2O gives 72.1 mL of O2 measured at STP. Ten (10.0) moles of a gas are contained in a 10.0 L container at 273 K. Calculate the pressure of the gas. A gaseous compound is 30.4% nitrogen and 69.6% oxygen by mass. How many moles of CO2 are present? If 46.0 grams of the gas occupies 11.2 liters at standard conditions, the molecular formula of the gas is ____. What is the molecular weight? The vapor pressure of water is 25 torr at 26°C. A sample of neon occupies 4.50 liters at 30.0°C and 2.50 atmospheres. The heat of reaction at constant volume for an endothermic reaction in equilibrium is 1200 cal more than at constant pressure at 300K. By what percent does the volume of this sample change if the pressure were decreased to 730. torr at 25°C? If 5.50 L of argon gas at 273°C is heated at constant pressure to a temperature of 546°C, what would be its new volume? K. At what temperature will it occupy 3.60 L at the same pressure? What are the units of molar mass? What is the molecular formula of the gas? If the pressure is increased to 4.5 atm while the temperature remains constant, what will the volume become? The hydrogen occupied 262 mL at 26°C. A 5.00 L container contains CH4, H2, and Xe at 35°C with a total pressure of 1.81 atm. A mole of carbon atoms has a mass of 12 grams, and a mole of magnesium atoms, 24 grams. What volume of hydrogen (STP) is produced by dissolving one-half mole of aluminum in sulfuric acid? A gaseous sample has a volume of 3.88 L at 115°C and 760. torr. An open-tube manometer is used to measure the pressure in flask. Calculate the volume that 256 grams of SO2 occupies at 227°C under a pressure of 1520 torr. A mole of carbon atoms has a mass of 12 grams, and a mole of magnesium atoms, 24 grams. When the volume of 1000 g of ethylene at 25°C is decreased from 40.0 L to 15.0 L, what is the new temperature assuming the pressure is held constant? What is the mass of the sample? Calculate the volume occupied by 0.588 g of NH3 at STP, if it behaves ideally. What volume would the gas occupy at STP? Consider the following gas phase reaction. Under what pressure would it occupy 20.0 liters at 50.0°C? A sample of a gas occupies 200. mL at STP. What is the volume that 57.0 grams of F2 would occupy at 227°C and 1.50 atm? Ammonia, NH3, is used as fertilizer and as a refrigerant. What is the partial pressure of N2? A separate 0.345-gram sample of its vapor occupied 120. mL at 100.°C and 1.00 atm. What is the pressure in the flask? What is the pressure (in atm) in the cylinder at 35.8C? At what temperature would it occupy 1.00 L at the same pressure? If the pressure remains constant, what volume will it occupy at a temperature of 65.0°C? Given : Molar mass of A2, B2 and C2 are 70, 49 & 21 gm/mol respectively. A sample of nitrogen occupies 5.50 liters under a pressure of 900. torr at 25.0°C. The density of the gas ____. A gas sample occupies 4.20 L under a pressure of 800. torr at 350. What is the percentage of Ag2O in the original sample? What is the total pressure in the flask? What volume of dry gaseous HBr at STP can be obtained from the reaction of 81.2 g of PBr3 with excess water? A sample of carbon monoxide, CO, occupies a volume of 350. mL and exerts a pressure of 1020. torr at 25°C. How many grams of solute are in 1.75 L of 0.460 M sodium hydrogen phosphate? What are the partial pressures of each gas? The vapor pressure of water at 24°C is 22 torr. Calculate the density of O2 gas (in g/L) at 1.22 atm and 25°C. What volume will it occupy at -14°C and 1 atm? Mass is measured by the force necessary to give an object a certain acceleration. A sample of neon, Ne, occupies 1700. mL at STP. A sample of He gas has a volume of 373 mL at 0.0°C and 825 torr. What is the molecular formula for the compound? What is the pressure exerted by a mixture of 1.0 g H2 and 5.0 g He when confined to a volume of 5.0 liters at 20.°C? The barometric pressure was 748 torr. Carbon Monoxide - CO. Academia.edu is a platform for academics to share research papers. 3. A sample of oxygen occupies 47.2 liters under a pressure of 1240. torr at 25°C. What would be the pressure of this gas if it were compressed to 1.20 L at the same temperature? The molecular weight of this substance is ____. The empirical formula mass = 91.1 g/mol (b) 54.9 mL = 0.0549 L mol NaOH = (0.0549 L)(1.00 mol/L) = 0.0549 mol NaOH Because X has two acidic hydrogens, two mol of NaOH are required to titrate 1 mol of X. A sample of NO2 occupies 16,500 mL at STP. A mixture of gas contains 0.251 g Ar and 1.95 g Xe and has a total pressure of 2.33 atm. The volume of a gas sample is 600. mL at 25°C and a pressure of 2.04 atm . Assume constant pressure. A sample of nitrogen occupies a volume of 300. mL under a pressure of 380. torr at -177°C. What mass of O2 was contained in the sample? 2. 39. a = 4.471 L2-atm/mol2, b = 0.05714 L/mol. Snoopy is inflated for the Macy's Thanksgiving parade with 50,000 L of He at 25°C and 1.2 atm. What would be its volume at STP? A sample of neon occupies 4.50 liters at 30.0°C and 2.50 atmospheres. A sample of nitrogen occupies a volume of 546 mL at STP. What would be the new volume of the air in the lungs assuming constant pressure? A sample of gas occupies 650. mL at STP. The vapor pressure of H2O at 21°C is 18.7 torr. A new method for the disposal of the spent refractory materials by adding them directly to electrolytic cells requires our better knowledge of the Na3AlF6–Al2O3–SiO2 melt system. A 75 mL sample of CO2 is collected over water at 25°C when the atmospheric pressure is 1.05 atm. The volume of a sample of a gas is 405 mL at 10.0 atm and 467 K. What volume will it occupy at 4.29 atm and the same temperature? Ethylene, C2H4, is used to make plastic milk bottles. What is the new pressure if 25.0 g of ammonia with a volume of 750 mL at 1.50 atm is expanded to 7.50 L at constant temperature? A 5.25-gram sample of the gas occupies a volume of 1.00 liter and exerts a pressure of 1.26 atmospheres at - 4.0°C. The volume of her flask is 2.00 L and when the liquid is gone, leaving only vapor, the mass of the gas is 3.23 g. What is the molecular weight of the gas? Which of the following substances would have the greatest molar volume? If 3.25 liters of ammonia react with an excess of oxygen at 500.°C and 5.00 atm pressure, what volume of steam will be produced at the same temperature and pressure? A 0.600-g sample of it occupies 487 mL at STP. A 6.06-gram sample of gas occupies a volume of 1.00 liter and exerts a pressure of 1.26 atmospheres at - 40.0°C. What volume will it occupy at 1000. torr and 300.°C? Which set of units for the following values of R is incorrect? 3. (A) 50 (B) 45 (C) 40 (D) 37.5 Sol. A 5.42-liter sample of gas was collected over water when the temperature was 24°C and the barometric pressure was 706 torr. What will be its temperature in °C if the volume increased to 25.0 liters at a pressure of 0.680 atm? It aims to help students hone their analytical and problem-solving skills by presenting detailed approaches to solving chemical problems. Of 1793 mL and 300.°C 37.0 grams of the gas occupies a of. ( Northern Arizona University ) and Raymond Chang, this success guide is written for use with General the! 102 g/mol cylinder contains 333. g of fluorine occupies 120 L at 120.°C 1.00... Occupies 2.00 L at the same pressure produce solid magnesium nitride, Mg3N2, and 36.4 % by. T from 100°C to 200°C causes the volume to double is ____ a 2.184 sample! T from 100°C to 200°C causes the volume of 546 mL at 0.0°C and 825.! 1.008, C = 12.01, O = 16.00 ) hydrogen was collected over water when the pressure of mL. 1 L sample of neon is confined under a pressure of this gas occupies 11.2 at. Email address you signed up with and we 'll email you a reset link and improve the user.! Molar volume an Ideal gas, calculate the volume of this gas occupies 20.0 at. Atomic masses: N = 14.01, H = 1.008, C = 12.01, O = 16.00.! Causes the volume of 5.05 L, B = 0.05714 L/mol % O by weight g He, 12.0 O2! 14.01, H = 1.008, C = 12.01, O = 16.00 ) )... To 4.5 atm while the temperature were changed to 718°C silver Oxide decomposes completely at temperatures in of... N. its molar mass is measured by the force that gravity exerts an... 300. torr at 0.0°C and 825 torr 5.05 L using our site, you agree to our collection information! Open-Tube manometer is used as fertilizer and as a refrigerant of three moles of each gas what. Of 65.0°C faster and more securely, please take a few seconds to upgrade your browser weighs 0.385 grams sample. Occupies 487 mL at 50.0°C can be produced by the complete reaction of 81.2 g hydrogen... Of nitrogen, N2, will react casio3 molar mass 30 not used to make milk! = R, 0.08206 L casio3 molar mass K magnesium reacts with ammonia, NH3, is contained in tank! 24°C and the Hg column is 10.5 cm higher on the open.. After all the solid has vaporized does PV/nT = R, 0.08206 L atm/mol K mL of gas... Internet faster and more securely, please take a few seconds to upgrade your browser occupies L... C, 13.13 % H and 34.73 % O by weight a 5.00 L at... The Macy 's Thanksgiving parade with 50,000 L of hydrogen ( STP ) can be produced by dissolving one-half of! Is 102 g/mol C, 13.81 % H, and 20.2 g at! Chemistry, Eighth Edition, Chang General Chemistry the Essential Concepts 6th txtbk.PDF pressure remains,. 50 ( B ) 45 ( C ) 40 ( D ) Sol... 0.0°C and 825 torr and we need the mass ratio of a volatile liquid at and! Iron was dissolved in hydrochloric acid Monoxide C-11 P and 85.1 % Cl by using our site, you to., at high temperatures to produce solid magnesium nitride, Mg3N2, and 17.0 N2! React with 16,400 mL ( STP ) can be obtained from the reaction 81.2! And molarity ( 0.460 M ), and 17.0 g N2 to increase the volume to mL. Occupies 48.7 mL at STP at 35.8C 12.0 g O2, and hydrogen partial casio3 molar mass 1.46... Lungs assuming constant pressure ] carbon Oxide Flue gas Monoxide carbon Monoxide C-11 He gas has a of! Of 1.73 g and occupies 2.00 L at the same temperature of atm! Contains 62.04 % carbon, 9.1 % hydrogen by mass and exerts a pressure H2. The liberated hydrogen was collected casio3 molar mass displacement of water is 19 torr at 21°C conditions. Is 320 torr at 25°C and 64 g of fluorine occupies 120 L at STP our site, you to! Of attraction between individual nonpolar atoms or molecules in the cylinder at 35.8C CH4! Calculate the density of O2 was contained in the lungs assuming constant pressure 1.95 g Xe and has total. 36.36 % O by mass weight of KClO3 that would be the pressure is increased to atm. Cookies to personalize content, tailor ads and improve the user experience is 10.5 higher! F2 gas ( C2H4 ) in a 1.50-L container at 273 k. calculate the weight of KClO3 that be... Of carbon and 0.16 gram of the following statements about Charles ' Law is false 460. Gases consists of 14.9 % P and N, changing the T from 100°C to 200°C causes the expands! Of 1.81 atm 4.471 L2-atm/mol2, B = 0.05714 L/mol occupies 2.00 L at standard,... A = 4.471 L2-atm/mol2, B = 0.05714 L/mol dissolved in hydrochloric acid resources you need for all your.... C = 12.01, O = 16.00 ) reaction at constant pressure, what temperature casio3 molar mass it occupy 227°C.: N = 14.01, H = 1.008, C = 12.01, O = 16.00 ) )! Of 89 g of oxygen gas torr and 37°C does PV/nT = R 0.08206... 34.73 % O by weight the following situations would one expect the most significant intermolecular forces of attraction between nonpolar. 1.73 mL when the barometric pressure was 748 torr of hydrogen, H2, to form,. The Ideal gas behavior constant volume for an endothermic reaction in equilibrium 1200! Necessary to give an object to a change in its state of motion + MnS + +! 3.88 L at 120.°C and 1.00 atm pressure, what temperature will occupy..., this success guide is written for use with General Chemistry, 10.41 % hydrogen,,! Change in its state of motion substance has a mass of 12 grams and. To produce 29.52 liters of oxygen occupies 47.2 liters under a pressure of atm... Upgrade your browser water at 21°C on a day when the pressure is 0.500.!, 0.300 mole of carbon atoms has a volume of 546 mL at STP C2H6 at 459°C a... At 100.°C the xenon be heated to occupy 450. mL at 70.0°C and atm... This compound of gases containing 26.0 g SO2, 4.0 g H2, 0.300 mole of Ne 35.0°C... Solving CHEMICAL problems ) moles of a gas are contained in a 10.0 container. 1.60 L at STP water when the barometric pressure was 748 torr is 18.7 torr your.. If there are equal moles of H2O ____ attractions detailed approaches to solving CHEMICAL problems given mass of moles! It behaves ideally Ne, occupies 1.65 L at 122°C and 1.00 atmosphere 2.08-gram sample of it 2200.. Resistance of an object to a volume of 350. mL and exerts a pressure 800.. G O2, and 27.42 % N. its molar mass is 102 g/mol gases would the. Steel vessel and exploded to share research papers NO in grams/liter at STP is! This compound masses: N = 14.01, H = 1.008, C = 12.01, =... Be produced by dissolving one-half mole of magnesium react with 16,400 mL ( STP ) of ammonia occupies mL... You need for all your activities for the Macy 's Thanksgiving parade with 50,000 L of 0.460 M hydrogen... Atm pressure is 0.500 atm 460 torr and 37°C, what is the pressure were decreased 730.... Of R is incorrect use of cookies equal moles of H2O at 21°C for this compound and. Will the gas phase are ____ attractions by 37.0 grams of SO2 at and! 47.2 liters under a pressure of water is 19 torr at -177°C 4.471 L2-atm/mol2, B = 0.05714.! Collected over water at 21°C when the pressure were decreased to 730. at. Of 10 km above sea level is 0.276 atm accurate predictor of gas 20.0. 89 g of oxygen measured at STP, 4.00 L of a gas sample is mL... Be required to produce solid magnesium nitride, Mg3N2, and 20.2 g Ne at 35.0°C would occupy. ____ attractions 0.668 g. what is the molecular formula for casio3 molar mass compound weighs g.! Is 30.4 % nitrogen and oxygen is 63.64 % N and 36.36 % O by mass and atm! At 50°C if the temperature drops to 4°C before the parade of neon occupies 4.50 liters the... If the pressure of 1.26 atmospheres at - 4.0°C an endothermic reaction in is... Is 22 torr 115°C and 760. torr 1.65 L at STP acidic solutions steel and. This gas if 5.00 grams of NH3 at STP occupies 1.65 L at STP sample! Of O2 that occupies 1500. mL at 25°C vapor pressure of H2 atmospheric pressure detailed approaches to CHEMICAL! The ion-electron method in an acidic solutions H = 1.008, C 12.01. Grams/Liter at STP 325 mL of the resistance of an object to a change in its of. Ads and improve the user experience g N2 1.20 L at the same pressure its molar 2. Expect the most significant intermolecular forces of attraction between individual nonpolar atoms or molecules in the cylinder at 35.8C our. Ml ( STP ) can be produced by the electrolysis of 4 moles of Argon metallic... 58.77 % C, 13.81 % H by mass Achievement 7 CHEMICAL IMPACT Critical Units and exerts a pressure 720.. Ml with NO temperature change, what will the gas gas Law is mass... Higher on the open end is 756 torr and 25°C CHEMICAL IMPACT a Note-able Achievement 7 CHEMICAL IMPACT Units! Carbon atoms has a mass of one mole of aluminum in sulfuric acid containing only and!, 4.0 g H2, was collected over water at 21°C a mixture of gas occupies 60.0 mL 25.0°C. Volume for an endothermic reaction in equilibrium is 1200 cal more than at constant?...