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PAP Chemistry-2903012-42100P-1 / Gases / Lesson 148 Aguilar All changes saved 25. The kinetic molecular theory says that collisions between particles are elastic, but real-world collisions do not follow this assumption. What is some of the kinetic energy changed into after a collision? O heat O light O potential energy O chemical energy SAVE & EXIT SUBMIT ALL ANSWERS PREVIOUS 25 of 25 96

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Products purchased from grocery stores are dated and need to be used within a certain amount of time. This is to protect consumers from the effects of food spoilage. Which process helps to slow the spoilage of food products?

rsity o... ingsbo... kboard... ARED4 ethod? 7... F2 Remaining Time: 1 hour, 22 minutes, 23 seconds. Question Completion Status: A Moving to the next question prevents changes to this answer. Question 1 # The angle of the water molecule (H₂O) is 180 degrees 120 degrees 100 degrees 90 degrees 109 degree A Moving to the next question prevents changes to this answer. MAR 14 80 F3 SA $ 000 F4 tv % F5 NA MacBook Air 22 F6 ∞r F7 45.113

За. Bromine and methanoic acid react in aqueous solution. Br, (aq) + HCO0Н (ад) — 2Br (aq) + 2H" (аq) + Со, (g) The reaction was monitored by measuring the volume of carbon dioxide produced as time progressed. o 5 10 15 20 25 [Source: © International Baccalaureate Organization 2019] 30 20 40 60 80 100 120 140 160 Time / s [Source: © International Baccalaureate Organization 2019] Determine from the graph the rate of reaction at 20 s, in cm³ s1, showing your working. 3b. Outline, with a reason, another property that could be monitored to measure the rate of this reaction. 3c. Describe one systematic error associated with the use of the gas syringe, and how the error affects the calculated rate. 3d. Identify one error associated with the use of an accurate stopwatch. Volume of carbon dioxide / cm T m mm mo

Answer question 21 and 22 short answers

30- 25 22.285 20 atm 15. 10- 50 100 150 200 250 300 seconds created x10 Is BF, being created or destroyed by the chemical 3 destroyed reaction? neither created nor destroyed is being created or destroyed, what is the rate at If BF3 which it is being created or destroyed 80 seconds after the reaction starts? Round your answer to 2 significant digits. Also be sure your answer has the correct unit symbol. If BF, is being created or destroyed, what is the 3 average rate at which it is being created or destroyed during the first 80 seconds of the reaction? Round your answer to 2 significant digits. Also be sure your answer has the correct unit symbol.

All changes saved 17 Allyson and Cami add 25 mL of 3 M hydrochloric acid (HCI) to beakers containing 0 mL, 25 mL, 50 mL, and 75 mL of distilled water. The students then drop 5 cm of Magnesium (Mg) ribbon into each beaker and measure the time for the magnesium to completely react with the acid. The results are shown in the data table. W Y. 125 mL 125 mL 125 mL 125 mL 100 mL 100 mL 100 mL 100 mE 75 mL 75 mL 75-mE 75 mL 50 mL 50-mL 50 mL 50 mL 25-mL 25 mL 25 mL 25 mL Magnesium and HCI Reaction HCI Water Time Beaker (mL) (mL) (s) W 25 8. 25 25 16 25 50 23 Y 25 75 33 17 of 25 NEXT SAVE&EXIT PREVIOUS Which statement BEST explains the change in reaction time as the amount of water increases? US 7:18 Lit & 8.

Part A Consider the equation for the decomposition of SO2 Cl2, SO2Cl2 (g) → SO2 (g) + Cl2 (g) Use the graph and the best fitting line to predict the concentration of SO2 Cl2 at 1700 s. The graph of In SO2 Cl2] versus time is Express your answer to two significant figures and include the appropriate units. -2.3 Slope y-intercept HẢ ? -2.4 y = -0.000290t - 2.30 -2.5 Value Units -2.6- -2.7 Submit Request Answer -2.8+ 500 1000 1500 2000 Time (s) Provide Feedback In [SO,Cl2]

Enzyme activity (Effect of temperature) Research Question How does temperature affect the activity of the enzyme catalase? Hypothesis The higher temperature would increase Catalase activity, leading to a faster reaction. Temp (degrees Trial! 4 5.85 3.06 10 22 Ho Results Time to float disc 65t 4.00 1/29/24 Mini Lab #1 10.49 9.43 Trial a 5.70 2.86 5.26 7.86 11.36 Average 5.775 2.96 4.63 9.175 10.395 Rate Class average

A clinic had 25 patients on Friday morning. If 21 patientswere given flu shots, what percentage of the patientsreceived flu shots? Express your answer to the ones place.

Answer both questions at bottom

Consider the following reaction: H2(g) + Cl2(g) 2 2 HCI(g) AH = -184.6 kJ The following graph represents a stress imposed on the system after equilibrium is initially established. HCL Cl2 He 60 50 40 30 20 10 + + 10 20 30 40 Concentration (mol/L)

Please the two images are one question

Drug Concentration A pharmaceutical companyclaims that the concentration of a drug in a patient’sbloodstream will be at least 10% for 8 hours. Supposeclinical tests show that the concentration of a drug (aspercent) t hours after injection is given byC(t) = 200t/2t2 + 32During what time period is the concentration at least10%? Is the company’s claim supported by the evidence?

| ax NME /Chemical%20Reactions%20Asgn%202-5.pdf 9 Employee Home r4c Covenant Health Ca... Outlook.com - Free... S Birthday party politi. G what does it mea 1 / 2 100% Chemical Reactions-Write Neat and Balanced Reactions from Word Equations You need to submit one sheet of paper (not this one), that is very neat, with a fully balanced reaction for these 6 reactions Remember to include proper states. 1. solid potassium metal reacts with oxygen gas to produce solid potassium oxide. 2. solid potassium chlorate decomposes into oxygen gas and solid potassium chloride. 3. solid aluminum oxide is decomposed into solid aluminum and oxygen gas. 4. aqueous cobalt(III) nitrate reacts with solid zinc to produce aqueous zinc nitrate and solid cobalt.

Consider the equation for the decomposition of SO2C22, SO2Cl2 (g) → S02(g) + Cl2 (g) The graph of In SO2 Cl2] versus time is -2.3- Slope y-intercept -2.4 y -0.000290t 2.30 -2.5 -2.6- -2.7 -2.8+ 0. 500 1000 1500 2000 Time (s) You may want to reference (Page) Section 14.4 while completing this problem. In [SO,Cl]

Which energy levels precede and succeed 4s ?

For A⟶products, time and concentration data were collected and plotted as shown. [?] (?) t (s) 0.6000.600 00.000.0 0.4840.484 30.030.0 0.4050.405 60.060.0 0.3490.349 90.090.0 order =    k =    units =

"71 36 K/s ill.l O 10:01 يستخدم التطبيق المیکروفون Me et من 6 / What are the goals of adding vinegar to milk 2/ What are the results of adding vinegar to milk 3 / What is the benefit of adding vinegar to milk 10:01 زهراء 21.03.17 الساعة ص 10:01