A gas sample enclosed in a rigid metal container at room temperature (20.0°C) has an absolute pressure p₁. The container is immersed in hot water until it warms to 40.0° C. What is the new absolute pressure på? Express your answer in terms of p1. View Available Hint(s) P2 = [-] ΑΣΦ Submit ?
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- Consider an ideal gas at 27.0 degrees Celsius and 1.00 atmosphere pressure. Imagine the molecules to be uniformly spaced, with each molecule at the center of a small cube. Part A What is the length L of an edge of each small cube if adjacent cubes touch but don't overlap? Express your answer numerically in meters. ► View Available Hint(s) L = for Parval for PartAddo for Part Submit redo for Part A reset for Part A keyboard shortcuts for Part A help for Part A mWhat is the amount of heat entering your skin when it receives the heat released by 23.0 g of steam initially at 100.0°C that cools to 36.0° C? Assume Ly = 2256 × 10³ J/kg and cw 4190 J/(kg · K). Express your answer with the appropriate units. HÀ Q1 = Value Units Submit Request Answer Part B What is the amount of heat entering your skin when it receives the heat released by 23.0 g of water initially at 100.0° C that cools to 36.0°C? Express your answer with the appropriate units. HẢ Q2 Value Units Submit Request Answer Part C What do these results tell you about the relative severity of steam and hot-water burns? Steam burns are much more severe than hot-water burns. Hot-water burns are much more severe than steam burns. There is no difference between hot-water and steam burns.Constants An air bubble at the bottom of a lake 43.5 m deep has a volume of 1.00 cm³. Part A If the temperature at the bottom is 5.6° C and at the top 17.0°C, what is the radius of the bubble just before it reaches the surface? Express your answer to two significant figures and include the appropriate units. HA ? Value Units r = Submit Previous Answers Request Answer
- A surveyor has a stainless steel measuring tape that is calibrated to be 100.000 m long (i.e., accurate to ±1 mm) at 20°C. She needs to add the correction factor to get the true distance. Submit Correct Part B How large, in mm, is the correction factor? Express your answer in millimeters to two significant figures. ► View Available Hint(s) Previous Answers AL = 11 Submit VΠ ΑΣΦ Provide Feedback Previous Answers ? X Incorrect; Try Again; 14 attempts remaining mm0.0040 mol of gas undergoes the process shown in (Figure 1). Figure p (atm) 4. 2- 0+ 0 100 200 300 < 1 of 1 V (cm³) Part B What is the initial temperature in °C? Express your answer in degrees Celsius. T₁= 609.2 Submit Part C Π| ΑΣΦ X Incorrect; Try Again; 5 attempts remaining T₁ = Previous Answers Request Answer What is the final temperature in °C? Express your answer in degrees Celsius. Submit VE ΑΣΦ Request Answer ]] ? Provido Foodbook ? °CIP A gas has a temperature of 310 K and a pressure of 105 kPa Part A Find the volume occupied by 1.50 mol of this gas, assuming it is ideal. Express your answer using three significant figures. Vgas 3.68x102 m² Submi Part B Correct Correct answer is shown. Your answer 0.037 m² was either rounded differently or used a different number of significant figures than required for this part. Important: If you use this answer in later parts, use the full unrounded value in your calculations. Previous Answers Verdan Assuming the gas molecules can be approximated as small spheres of diameter 2.5x10-10 m, determine the fraction of the volume found in part A that is occupied by the molecules. Express your answer using two significant figures. Submit Review ΥΠ' ΑΣΦΑ Previous Answers Request Answer
- A 20-cm-diameter cylinder that is 40 cm long contains 60 g of oxygen gas at 20° C. For general problem-solving tips and strategies for this topic, you may want to view a Video Tutor Solution of Air in warmed tire. Part B How many oxygen molecules are in the cylinder? N 1.1x1024 molecules Submit Part C Correct Here we learn how to find the number of molecules in the gas if we know its mass. n = What is the number density of the oxygen? Express your answer in molecules per meter cubed. Previous Answers Submit Part D 17 ΑΣΦ Request Answer ? What is the reading of a pressure gauge attached to the tank? Express your answer with the appropriate units. m -3Question 1 A pressure cooker is sealed shut, and is heated initially to 40C, or 313.15 Kelvin and held there. The pressure is measured to be P_a= 140.0 kPa, kilopascals, absolute. The temperature is cooled, or raised to 323.2 Kelvin, what is the new pressure in kPa. Your Answer: AnswerLead has a density of 11.3 103 kg/m3 at 0C. (a) What is the density of lead at 90C? (b) Based on your answer to part (a), now consider a situation in which you plan to invest in a gold bar. Would you be better off buying it on a warm day? Explain.
- 1 of 3 I Review | Constants Periodic Tab Part A Container A contains gas at 300° C. Container B contains the same gas, but at 150°C.Which of the following is a true statement? O All of the gas molecules in container A move slower than all of the gas molecules in container B. The root mean square speed (urms) of the gas molecules in container B is greater than the root mean square speed (uns) of the gas molecules in container A O All of the gas molecules in container A move faster than all of the gas molecules in container B O None of the above statements are true. Submit Reques Answer Nex Provide Feedback 625 P 70°F 11/28/2QUESTION 3 A pot of soup is heated on the stove. When the temperature of the soup reaches 98° C, the pot is taken off the stove and placed on a counter in the kitchen. The temperature of the air in the kitchen is 24°C. i. ii. Find the temperature of the temperature of soup at time t. How long will it take for the temperature of the soup to be 40°C.Part A 5.0 g of nitrogen gas at 20° C and an initial pressure of 2.2 atm undergo a constant-pressure expansion until the volume has tripled. What is the gas volume after the expansion? Express your answer with the appropriate units. • View Available Hint(s) µÀ V = Value Units Submit ▼ Part B What is the gas temperature after the expansion? Express your answer in kelvins. • View Available Hint(s) ΑΣφ T = K