-A piece of stone weighs 0.05 pounds. When it is submerged in a graduated cylinder containing 50 ml of water, the level rises to 60 ml. What is the density of stone in g/ml. Ans 2.27 g/ml
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-A piece of stone weighs 0.05 pounds. When it is submerged in a graduated cylinder containing 50 ml of water, the level rises to 60 ml. What is the density of stone in g/ml.
Ans 2.27 g/ml
-The temperature at which mercury freezes is -35°C. What temperature in degrees Fahrenheit at which a mercury thermometer cannot be used?
Ans. -31 °F
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- Automobile tire with a volume of 0.7 m3 is inflated to a gauge pressure of 250. kPa. if the temperature is 25°C and atmospheric pressure is 100 Kpa. The mass of ?air in the tire is greater than 2 kg less than 2 kg equal to 2 kg OA gas is heated to 75 °C and a pressure of 200 kPa. If the container is compressed to hold a volume of 700 mL, what was the volume of the gas, (in litres), at a temperature of 40 °C and 100 kPa pressure? B. A vessel of volume 5x10-5 m3 contains hydrogen at a pressure of 1.5 Pa at a temperature of 37 °C. Estimate: i. The number of molecules of hydrogen gas in the vessel. (4 marks) ii. The number of moles of hydrogen. iii. Mass of hydrogen iv. The kinetic energy of hydrogen. v. The root mean square speed. Given: M = 1.008 g/mol; R = 8.31 J/mol-K; NA = 6.02 x 1023 mol-1; k = 1.38 x 10-23 J/K500 Ibm of methane gas is stored in a container of dimensions 4 m length, 4 m width and 6 m height under pressure of 200 kPa and temperature of 25 °C. What is the density of gas in the container in Kg/m'?
- How many atoms of Oxygen gas fill a cubic box of length 30.0 cm at 20.0ºC and 1.013 x 105 Pa? O 6.76x1023 atoms b. '6.76x1024 atoms 9.9x1024 atoms Od 9.9×1030 atomsAn arctic weather balloon is filled with 40.7 L of helium gas inside a prep shed. The temperature inside the shed is 7.°C. The balloon is then taken outside, where the temperature is −11.°C. Calculate the new volume of the balloon.You may assume the pressure on the balloon stays constant at exactly 1atm. Round your answer to 3 significant digits.5. A gas is contained in a vertical, frictionless piston-cylinder device shown in Figure P1.9. The piston has a mass of 4 kg and a cross-sectional area of 35 cm?. A compressed spring above the piston exerts a force of 60 N on the piston. If the atmospheric pressure is 95 kPa, determine the pressure inside the cylinder. 60 N Pam- 95 kPa mp= 4 kg À - 35 cm?
- A hot air balloon uses the principle of buoyancy to create lift. By making the air inside the balloon less dense then the surrounding air, the balloon is able to lift objects many times its own weight. A large hot air balloon has a maximum balloon volume of 2090 m3. a. If the air temperature in the balloon is 54 °C, how much additional mass, in kilograms, can the balloon lift? Assume the molar mass of air is 28.97 g/mol, the air density is 1.20 kg/m3, and the air pressure is 1 atm.The air pressure inside the tube of a car tire is 338.0 kPa at a temperature of 14.5 °C. What is the pressure of the air, if the temperature of the tire increases to 63.5 °C? Assume that the volume of the tube doesn't change. Submit Answer Tries 0/12 What is the air pressure inside the tube, if the volume of the tube is not constant, but it increases from 24.6 I to 25.1 I during the warming process described above? Submit Answer Tries 0/12An arctic weather balloon is filled with 49.6L of helium gas inside a prep shed. The temperature inside the shed is 11.°C. The balloon is then taken outside, where the temperature is −39.°C. Calculate the new volume of the balloon.You may assume the pressure on the balloon stays constant at exactly 1atm. Round your answer to 3 significant digits.
- A storage tank at STP contains 21.2 kg of nitrogen (N2). Part A What is the volume of the tank? μΑ V = Value Units Submit Request Answer Part B What is the pressure if an additional 32.1 kg of nitrogen is added without changing the temperature? V ΑΣφ P = atm Submit Request AnswerA closed 1 L water bottle contains air at standard temperature and pressure. The bottle is left in a room for a few hours, and the sun heats up the bottle to 30oC. What is the new pressure inside the bottle? Give an answer in atm with 3 digits of precision behind the decimal.A cylinder of gas at room temperature (20°C) has a pressure p1. To what temperature in degrees Celsius would the temperature have to be increased for the pressure to be 1.2p1?