Act B4- Lab Report- Emely Ramirez

E DetaMath 6 Quiz Chemistry Spring Final x D A sample of helium gas has xG 391ml of gas with a tempera x G number of electrons on a tric + -> b cfbisd.instructure.com/courses/85698/quizzes/390093/take/questions/2865049 Q * e D GO D CFB A Pearson Realize 6 Dashboard @ Student Resources E Google Docs creat A google ciassroom O Nearpod Welcome- O Meeting is in progre O Reading list Balance the following reaction: Al + Fe203 → Al203 + Fe *remember to enter a 1 for coefficient is there is no change. US VO 3:53 esc @ #3 $ bac 3 4 7 8. 9. W e t y a d. f k

If the cylinder is opened and the gas allowed to escape into a large empty plastic bag, what will be the final volume of nitrogen gas, including what's collected in the plastic bag and what's left over in the cylinder? Write your answer in liters. Be sure your answer has the correct number of significant digits.

Part B What are each of the following observations an example of? Drag the appropriate items to their respective bins. • View Available Hint(s) Reset Help When person applies perfume in one corner of the room you can smell its fragrance in another room. When a coworker microwaves popcorn, you can smell the vapors in your office 5 minutes later. A balloon in a constant environment gets smaller and smaller over the course of a week as gas leaks through small holes in the rubber. When you drive over a nail the volume of the tire decreases slowly over time as air escapes through the hole. Diffusion Effusion

Part IV:  Relationships Between Gas Variables   Scientists in the late 1800’s noted relationships between many of the state variables related to gases (pressure, volume, temperature), and the number of gas particles in the sample being studied.  They knew that it was easier to study relationships if they varied only two parameters at a time and “fixed” (held constant) the others.  Use the simulation to explore these relationships.   Variables Constant Parameters Relationship Proportionality (see hint below) pressure, volume     directly proportional or inversely proportional volume, temperature     directly proportional or inversely proportional volume, number of gas particles     directly proportional or inversely proportional   Hint: A pair of variables is directly proportional when they vary in the same way (one increases and the other also increases).  A pair of variables is inversely proportional when they vary in opposite ways (one…

Please answer the question and show your work.  6a.  A helium balloon was partially filled with 8,000 ft3 (cubic feet or ft3, is a unit of volume) of helium gas when the atmospheric pressure was 0.98 atm and the temperature was 23 °C.  The balloon rose to an altitude where the atmospheric pressure was 400 mm Hg and the temperature was 5.3 °C.  What volume in ft3 did the helium gas occupy at this altitude?

Calculate the volume of the flask using the mass of water which filled the flask and the density of water at the measured temperature. In addition to the volume of the flask, you will need to add 3.0 mL to account for the volume of the tube that leads to the pressure sensor. Table 1 Density of water  Temp. (ºC) 20   21   22   23  24  25  26  27  28  29  30 Density (g/mL) 0.9972  0.9970  0.9968  0.9966  0.9964  0.9962 0.9959  0.9957  0.9955  0.9952  0.9949 Mass of flask and stopper: 95.1868 g Mass of flask and stopper filled with water: 230.244 g Temperature of water: 23 C

2.) It’s a bad day in the lab!  Two students are doing experiments.  Each is 20 feet away from the professor.  At the same time, each of them lets the same amount of a smelly gas into the room.  One of them releases ammonia, NH3, and the other releases SO2.  NH3 has a pungent odor, and SO2 smells like rotten eggs.  The professor has no idea that this has happened, until she smell the first gas.  Which chemical will the professor smell first?   (NH3 or SO2)                                .  If the professor starts to smell the first gas 42. seconds after the gas is released, how long will it take her to smell the second gas?       sec. * Note: It is unsafe practice to work with these chemicals in an open lab.

Please help me on the analysis question. Thank you.

I Review I Constants I Periodic Table Part A MISSED THIS? Read Section 6.3 (Pages 216 - 222) ; Watch KCV 6.3. A sample of gas has an initial volume of 14.9 L at a If the sample is compressed to a volume of 11.2 L , what is its pressure? pressure of 1.17 atm . Express the pressure in atmospheres to three significant figures. ΑΣφ P2 = atm Submit Request Answer Provide Feedback Next >

please answer both questions

Classify the substance shown in the sketch below. You can click the other tabs in the sketch to get a magnified view. Be sure you check all the boxes on the right-hand side that are correct for this substance. Note for advanced students: in some sketches the distance between particles has been exaggerated to make it easier to see each individual particle. normal substance 1000X 10,000,000X classification (check all that apply) 8888888888 gas liquid solid element compound mixture solution pure substance homogeneous mixture heterogeneous mixture Ś

U11HW Question 7 Homework • Unanswered Fill in the Blanks Type your answers in all of the blanks and submit Now consider a sample of the gas at 33 deg C, 744 mm Hg, and 450 mL. How many moles of neon are in this sample? Amount of gas in sample = Type your answer here moles Unanswered Submit 16 Fullscreen a 8:45 PM 4/11/2021 近

69 * 00 < CO T R #3 Your answers are saved automatically. Remaining Time: 13 minutes, 21 seconds. * Question Completion Status: 2 1. 3. QUESTION 1 A mixture of three gases, Ron, Harry and Hermione is stored in a constant volume container at constant temperature. The mixture contains the amount of moles of each of these gases listed below. The total pressure of the mixture is 3.95 atm. What is the partial pressure (atm) of Gas Ron in the mixture? Report your answer to the thousandths place and do not include units. Ron Harry He mione 0.696 mol 0.724 mol 0.338 mol QUESTION 2 The heat of combustion for C3H8 (44.1 g/mol) is -2220.0 kJ/mol. Calculate the heat of reaction (in kJ) when 14.88 g C3H8 is combusted. Be sure to include the correct sign in your answer (+ or -) and do not put a space between the sign and the number. Do not include units in your answer. Report your answer to the hundredths place. Click Save and Submit to save and submit. Click Save All Answers to save all answers.…

Show the work to sample 1,2 and 3.

Volcano # 1 Volume of gas produced (ml) vs. Time (s) for Volcano #1 Volume of gas produced (mL) Time (s) 60 50 10 25 40 20 38 30 46 9 30 • Volume of gas produced (mL) 40 50 20 50 52 10 60 53 0. 20 40 60 80 Time (s) Volcano # 2 Volume of gas produced (ml) vs, Time (s) for Volcano #2 Volume of gas Time produced (mL) 50 45 40 10 10 20 19 30 25 30 26 • Volume of gas produced (mL) 40 33 50 39 60 45 20 40 60 80 Time (s) MacBook Air DD 80 888 F9 F6 F7 esc F3 F4 FS F1 F2 @ 23 $ 7 8. 1 2 3 4 Q W E R T Y K A S F ock C V Volume of gas produced (mL.) (ju) peɔnpoud seß jo ewnjo

the atmospheric pressure in inches Hg (inHg) 30.08 Temperature at beginning of measurements (°C) 20.6     Mass added Syringe volume Reading 1 0.0   5.0   Reading 2 0.300   4.5   Reading 3 0.450   4.2   Reading 4 0.650   4.1   Reading 5 0.950   3.6   Reading 6 1.150   3.1   Reading 7 0.200   5.4   Reading 8 0.400   6.7   Reading 9 0.550   7.5   Reading 10 0.700   8.4   Reading 11 0.900   9.3   Temperature at end of measurements (°C) 20.6   PV Measurements and Calculations   Volsyringe (mL) VolT (mL) Mass added (kg) Force (kg·m/s2) Psyr (Pa) PT (Pa) PV (Pa·mL) No mass addedReading 1 5.0     0.000           Increasing the pressureReading 2 4.5     0.300           Reading 3 4.2     0.450           Reading 4 4.1     0.650           Reading 5 3.6     0.950           Reading 6 3.1     1.150           Decreasing the pressureReading 7…

Lab 7: Gas Law Pre-Lab Questions 3. Your cousin made a bad life choice and went to Dominican College instead of STAC. He is also taking General Chemistry Lab this semester. Instead of reacting Mg with HCl, he is supposed to react zinc, Zn with HCl and performed a similar experiment. He reacted a 0.063 g sample of zinc with excess 1 M HCl at 24 °C (both lab and water temperature). The reaction produced a gas that expanded to a volume of 25.0 mL. The atmospheric pressure was 760 mmHg on the day he performed the experiment. a. Write the balanced equation for this reaction. HCI b. What is the pressure (in atm) of the H₂ gas that was produced? Remember to take into account the vapor pressure of water. c. What is the temperature in Kelvin? Name: d. How many moles of H₂ moles of H₂ should you produce with this amount of starting material? 116 e. Using the P, V, T, and n listed above, solve for your experimentally determined value of the Ideal Gas Constant, R. ***

Part 1. A lightly inflated balloon is placed in a freezer. Explain the change to the size of the balloon based on the kinetic molecular theory.Part 2. What would most likely happen to the balloon if it was instead kept outside in the sun for some time? Explain your answer based on the kinetic molecular theory.In both cases, assume the balloon is tied tight enough so that air does not escape.