lab#9worksheetinclass

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

"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

According to Wikipedia, Radiocarbon dating (also referred to as carbon dating or carbon-14 dating) is a method for determining the age of an object containing organic material by using the properties of radiocarbon, a radioactive isotope of carbon. The method was developed in the late 1940s at the University of Chicago by Willard Libby, who received the Nobel Prize in Chemistry for his work in 1960. It is based on the fact that carbon- 14 is constantly being created in the atmosphere by the interaction of cosmic rays with atmospheric nitrogen. The resulting carbon-14 combines with atmospheric oxygen to form radioactive carbon dioxide, which is incorporated into plants by photosynthesis; animals then acquire carbon-14 by eating the plants. When the animal or plant dies, it stops exchanging carbon with its environment, and thereafter the amount of carbon-14 it contains begins to decrease as the carbon-14 undergoes radioactive decay. Measuring the amount of carbon-14 in a sample from a…

Peroxynitric acid (HOONO2) is an unstable molecule that decomposes to nitric acid and oxygen: 2HOONO2(aq) → 2HNO3(aq) + O2(g)When the concentration of peroxynitic acid is graphed against time, the resulting plot is curved, but if the logarithm of this concentration is plotted, we instead get a straight line. Based on this, which statement is true? a)  This decay is a second order in peroxynitric acid. b)  The slope of the straight-line graph is the rate constant. c)  One needs the concentration of peroxynitric acid to calculate its half-life. d)  The rate law appears to be of the form -Δ[HOONO2]/Δt = k[HOONO2].

Nitric oxide reacts with hydrogen to release large amounts of chemiluminescence with the characteristics of the highly cytotoxic species. The following data were measured for the reaction of nitric oxide with hydrogen: Data number 1 2 3 2 NO(g) + 2 H₂(g) → N₂(g) + 2 H₂O(g) [NO] (M) 0.1 0.1 0.2 [H₂] (M) 0.1 0.2 0.1 Based on the data, (a) Determine the rate law for this reaction. (b) Calculate the rate constant. (c) Calculate the rate when [NO] = 0.050 M and [H₂] = 0.150 M Initial rate (M/S) 1.23 x 10-³ 2.46 x 10-³ 4.92 x 10-³

The following curves show how the kinetic energy is distributed among the molecules of a sample of a particular gas at a constant temperature (50 degrees Celsius). In other words, each plot maps out how many molecules have each of the possible values of kinetic energy. The peak of each curve represents the value of kinetic energy that is possessed by the largest number of molecules. Also shown on the plots is the activation energy for four different chemical reactions involving these molecules at the same temperature. Which reaction would likely have the fastest rate?

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According to the following reaction, disappearance rate of oxygen is 5.75 x 10-2 mol L-1 s-1. Determine  formation rate of dinitrogen pentaoxide (g)? 4 NO2(g) + O2(g) → 2 N2O5(g)     a. 0.0225 mol L-1 s-1   b. 0.1150 mol L-1 s-1   c. 0.0575 mol L-1 s-1   d. 0.0450 mol L-1 s-1   e. 0.180 mol L-1 s-1

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]

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Chapter 13 is a Homework question. question 47. Please explain how can I do it without graphing it because if this question comes on the test how can I quickly solve this question without any graph and do it mathematically? If possible can you make a video? Thank you.

A student working in lab is reacting calcium oxide with water by dropping lumps of calcium oxide into the distilled water. CaO (s) + H2O (ℓ) → Ca(OH)2 (aq) Which actions or changes can the student make to increase the number of effective collisions between CaO and H2O? [Specify all that are correct.] Group of answer choices - Use a larger beaker. - Add heat. - Decrease the amount of water. - Grind up the lumps of calcium oxide. - Use a catalyst.

A scientist observes the consumption of a reactant A in an experiment. This is the data they obtained, plotted in three different ways: 0.06 0.04 0.02 0.00 0 2 4 6 8 10 Time [s] -2.7 -3.2 -3.7 -4.2 0 2 4 6 8 10 Time [s] 50 740- Σ .≤ 30 20 10 0- 0 2 4 6 8 10 Time [s] What was the initial concentration (in M) bf A? (Round your answer to the nearest tenth. For example, 1.234 would be entered as 1.2)

Calculating the reaction rate of one reactant from that of another Nitric acid is a key industrial chemical, largely used to make fertilizers and explosives. The first step in its synthesis is the oxidation of ammonia. In this reaction, gaseous ammonia reacts with dioxygen gas to produce nitrogen monoxide gas and water. alo Suppose a chemical engineer studying a new catalyst for the oxidation of ammonia reaction finds that 514. liters per second of dioxygen are consumed when the reaction is run at 213. °c and the dioxygen is supplied at 0.64 atm. Calculate the rate at which nitrogen monoxide is being produced. Give your answer in kilograms per second. Round your answer to 2 significant digits. Ar kg x10 S ||

A bimolecular chemical reaction is one in which two chemicals react to form another substance. Suppose that one molecule of each of the two chemicals reacts to form two molecules of a new substance. If x represents the number of molecules of the new substance at time t, then the rate of change of x is proportional to the square of the numbers of molecules of the original chemicals available to be converted. That is, if each of the chemicals initially contained A molecules, then   dx dt  = k(A − x)2 where k is a constant. If 40% of the initial amount A is converted after 1 hour, how long will it be before 50% is converted? (Give an exact answer. Do not round.)

1a) The decomposition of ethanol at some constant temperature (above 500°C), over a copper surface, C2H5OH(g)--> CH3CHO(g) + H2(g) was studied by monitoring the total pressure with time.The following data were obtained:   t (s)     Ptotal (torr) 0 120 45 131 139 154 233 177 376 212 380 213 What will be the total pressure at t = 462 s? 1b) What is the rate constant (k)?(Include appropriate units.)