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2 Why is the boiling point of ammonia higher than the boiling point of ethane? What...
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 t...
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?
CUI 110 Oxygen, O2, and methanol, CH3OH, have the same mass: 32 amu. Explain why oxygen is a gas at om temperatu...
CUI 110 Oxygen, O2, and methanol, CH3OH, have the same mass: 32 amu. Explain why oxygen is a gas at om temperature, while methanol is a liquid at room temperature. 3 Why is the boiling point of ammonia higher than the boiling point 4 What type of interaction is responsible for sodium chloride's very high melting point? 5. What type of interaction is responsible for water's high boiling point?
1. Why is the boiling point of 1-butene higher than the boiling point of 1-propene? Group...
1. Why is the boiling point of 1-butene higher than the boiling point of 1-propene? Group of answer choices Because 1-butene has a different (and stronger) type of atom-to-atom intermolecular interaction than does 1-propene. Because 1-butene forms H bonds and 1-propene does not. As a larger compound, 1-butene can form more atom/atom intermolecular interactions than can 1-propene. None of the above reasons is correct. 2. An ethene molecule contains 4 H atoms. How many H bonds could ethane participate in...
Part 1. The air in a bicycle tire is bubbled through water and collected at 25∘C. If the total volume of gas collected i...
Part 1. The air in a bicycle tire is bubbled through water and collected at 25∘C. If the total volume of gas collected is 5.60 L at a temperature of 25∘C and a pressure of 760 torr, how many moles of gas were in the bicycle tire? - Part 2. A 295-mL flask contains pure helium at a pressure of 755 torr . A second flask with a volume of 480 mL contains pure argon at a pressure of 714...
A gas sample containing 0.3525 moles of a compound is trapped in a 2.641 liter vessel at 28.4 °C. What is the pres...
A gas sample containing 0.3525 moles of a compound is trapped in a 2.641 liter vessel at 28.4 °C. What is the pressure inside the vessel? Assume ideality. A sample of a gas was isolated in a gas containment chamber. The volume of the chamber was 1.245 cubic meters. The temperature was 22.80 °C, and the pressure was 88.26 kPa. What volume would this gas sample occupy at STP? Assume ideality. A student obtained the following data for an unknown...
im 2. The volume of a gas is 3.90 I at 72° C. What will the...
im 2. The volume of a gas is 3.90 I at 72° C. What will the volume become if the temperature is changed to -18° C at constant pressure? HINT: Use combined law with Tin kelvins. K = C + 2713.16 - On the final, no hints, no equations will be given, just constants and a periodic table. So prepare accordingly. P1V/ (natı) = P2V2/(n2T2) 3. How many moles of helium gas must be added to a balloon currently holding...
1. Use the following chart of boiling and melting point temperatures to answer the following questions....
1. Use the following chart of boiling and melting point temperatures to answer the following questions. Notice that the melting and boiling points can be grouped into two categories: those that occur at relatively low temperatures and those that occur at relatively high temperatures. Elemental form Melting point Boiling point Name H2 He 13.81 KL 0.95 K 20.28 K 4.22 K | hydrogen helium L i(s) 453.65 K 1615 K lithium Be(s) 1560 K 2744 K beryllium B(s) 2348 K...
8. i) How many moles of Neon gas will occupy a container with a volume of...
8. i) How many moles of Neon gas will occupy a container with a volume of 2.5 L at a temperature of 31.5°C and a pressure of 912 torr? ii) What is the density of the gas? 9. A tank of compressed mixed gases contains 0.40 moles of Hz (hydrogen), 1.3 moles of NO2 (nitrogen dioxide), and 0.80 moles of Ar (argon). The total pressure in the tank is 2.8 atm. What is the partial pressure of the Hz gas?...
ch.13 answer each of these please What is the boiling point of an aqueous solution that...
ch.13
answer each of these please
What is the boiling point of an aqueous solution that has a vapor pressure of 22.5 torr at 25°C? (Puo 23.78 torn; Kb = 0,512 °C/m). Express your answer using four significant figures. VO AXO ? c A solution contains 10.55 g of unknown compound (non-electrolyte) dissolved in 50,0 mL of water. (Assume a density of 1.00 g/mL for water.) The freezing point of the solution is -4,35 °C. The mass percent composition of...
8. What is the final boiling point of a 1.25 molal solution of sugar in water?...
8. What is the final boiling point of a 1.25 molal solution of sugar in water? The Kb for water is 0.512 C/m. (For sugar i = l.) 9. A solution was prepared by dissolving 0.52 mol hexane into 400g CCl4. What is the change in freezing point of this solution? Carbon tetrachloride has a freezing point depression constant of 29.8 Cm,and freezes at-23。. 10. A solution was prepared by dissolving 0.26 moles of ethanol (C2HsOH) into 750g Diethyl ether....
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?
CUI 110 Oxygen, O2, and methanol, CH3OH, have the same mass: 32 amu. Explain why oxygen is a gas at om temperature, while methanol is a liquid at room temperature. 3 Why is the boiling point of ammonia higher than the boiling point 4 What type of interaction is responsible for sodium chloride's very high melting point? 5. What type of interaction is responsible for water's high boiling point?
A gas sample containing 0.3525 moles of a compound is trapped in a 2.641 liter vessel at 28.4 °C. What is the pressure inside the vessel? Assume ideality. A sample of a gas was isolated in a gas containment chamber. The volume of the chamber was 1.245 cubic meters. The temperature was 22.80 °C, and the pressure was 88.26 kPa. What volume would this gas sample occupy at STP? Assume ideality. A student obtained the following data for an unknown...
im 2. The volume of a gas is 3.90 I at 72° C. What will the volume become if the temperature is changed to -18° C at constant pressure? HINT: Use combined law with Tin kelvins. K = C + 2713.16 - On the final, no hints, no equations will be given, just constants and a periodic table. So prepare accordingly. P1V/ (natı) = P2V2/(n2T2) 3. How many moles of helium gas must be added to a balloon currently holding...
1. Use the following chart of boiling and melting point temperatures to answer the following questions. Notice that the melting and boiling points can be grouped into two categories: those that occur at relatively low temperatures and those that occur at relatively high temperatures. Elemental form Melting point Boiling point Name H2 He 13.81 KL 0.95 K 20.28 K 4.22 K | hydrogen helium L i(s) 453.65 K 1615 K lithium Be(s) 1560 K 2744 K beryllium B(s) 2348 K...
8. i) How many moles of Neon gas will occupy a container with a volume of 2.5 L at a temperature of 31.5°C and a pressure of 912 torr? ii) What is the density of the gas? 9. A tank of compressed mixed gases contains 0.40 moles of Hz (hydrogen), 1.3 moles of NO2 (nitrogen dioxide), and 0.80 moles of Ar (argon). The total pressure in the tank is 2.8 atm. What is the partial pressure of the Hz gas?...
ch.13
answer each of these please
What is the boiling point of an aqueous solution that has a vapor pressure of 22.5 torr at 25°C? (Puo 23.78 torn; Kb = 0,512 °C/m). Express your answer using four significant figures. VO AXO ? c A solution contains 10.55 g of unknown compound (non-electrolyte) dissolved in 50,0 mL of water. (Assume a density of 1.00 g/mL for water.) The freezing point of the solution is -4,35 °C. The mass percent composition of...
8. What is the final boiling point of a 1.25 molal solution of sugar in water? The Kb for water is 0.512 C/m. (For sugar i = l.) 9. A solution was prepared by dissolving 0.52 mol hexane into 400g CCl4. What is the change in freezing point of this solution? Carbon tetrachloride has a freezing point depression constant of 29.8 Cm,and freezes at-23。. 10. A solution was prepared by dissolving 0.26 moles of ethanol (C2HsOH) into 750g Diethyl ether....
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