Question Solved1 Answer As you look out of your dorm window, a flower pot suddenly falls past. The pot is visible for a time t, and the vertical length of your window is Lw. Take down to be the positive direction, so that downward velocities are positive and the acceleration due to gravity is the positive quantity g. Assume that the flower pot was dropped by someone on the floor above you (rather than thrown downward). Part A From what height h above the bottom of your window was the flower pot dropped? Express your answer in terms of Lw, t, and g. ► View Available Hint(s) '! Templates Symbols undo rédo reset keyboard shortcuts help AS % 1 h = Submit Previous Answers

What voltage is applied to a 10.3 pF capacitor that stores 1.20 x 10-10 J energy.

I want the steps to the answer, answer, answer of the unit ◀ 檔案 下午1:16 6月3日 週五 99% Arrhenius Equation Activation Energy The effect of temperature on the rate of a reaction was studied and the following data obtained: k (S-¹) T (°C) 6.65x 10-4 6 7.78x10-4 8 9.81x10-4 11 1.43x10-3 16 2.73x10-3 25 3.35x10-3 28 4.39x10-3 32 5.35x10-3 35 It is known that the variation of the rate constant with the absolute temperature T is described by the Arrhenius equation: k = A exp [(-E₂ )/(RT)] where E is the activation energy, R is the universal gas constant and A is the pre-exponential factor (units of the rate constant). Taking the natural logarithm of both sides affords: Ea In k = In A - RT For a plot of y = In k versus x = 1/T, calculate the slope of the best straight line using linear regression. -0.0158s^-1 提交答案 1 pts nernst.chem.sfu.cal Incompatible units. No conversion found between "s^-1" and the required units. Tries 0/99 AD ◀檔案 下午1:16 6月3日 週五 99% Account - User x C Get Homework He X ✔ 未命名 General-Instructic X + ◆nernst.chem.sfu.ca 6 1.43x10-3 16 2.73x10-3 25 3.35x10-3 28 4.39x10-3 32 5.35x10 3 35 It is known that the variation of the rate constant k with the absolute temperature T is described by the Arrhenius equation: k = A exp [(-E₂ )/(RT)] where E is the activation energy, R is the universal gas constant and A is the pre-exponential factor (units of the rate constant). Taking the natural logarithm of both sides affords: Ea In k = In A - RT For a plot of y = Ink versus x = 1/T, calculate the slope of the best straight line using linear regression. -0.0158s^-1 1 pts 提交答案 Incompatible units. No conversion found between "s^-1" and the required units. Tries 0/99 X=D Calculate the activation energy Ea 110.288J'mol^-1 1 pts. 提交答案 Copyright: Department of Chemistry, Simon Fraser University - ⒸSFU Chemistry 2020-2022 This discussion is closed. Send Feedback 错误, Tries 2/99 以前的尝试 Fliplt Physics X LON-CAPA Arrhen X X :

Please do all 3 questions. Thank you. For parts of the free response question that require calculations, clearly show the method used and the steps involved in arriving at your answers. You must show your work to receive credit for your answer. Examples and equations may be included in your answers where appropriate. A student determines the mass percent of iron in a sample of iron ore by doing a redox titration. The student finds the mass of the sample and then dissolves it in acid to a total volume of 25.00 mL. Using a buret, the student titrates the 25.00 ml solution with 0.017 M K,C1,07. The following reaction occurs during the titration. Cr,0,? (aq) + 6 Fe2+ (aq) + 14 11+ (aq) + 2 Cr3+ (aq) + 6 Fe (aq) + 7 H1,0(1) The student collects the following data Mass of iron ore in original sample Buret reading at end point 0.36 g 45.52 mL 15.05 mL Initial buret reading (a) How many moles of Fe2+ (aq) reacted with the Cr, 0,2- (aq)? B 7 u x X 5 C 12 0/10000 Word limit < (6) Assuming that all the iron in the ore was Fe2+, calculate the mass percent of iron in the ore sample. (b) Assuming that all the iron in the ore was fet calculate the mass percent of iron in the ore sample. B I U x? X2 C 12 0/10000 Word Limit ©) The student learns that the actual mass percent of iron in the ore sample is greater than the experimental value calculated in part (b). The student claims that the difference between the actual and experimental values could have been caused by rinsing the buret with distilled water just prior to filling it with 0.017 M K,Cr,0(aq). Do you agree with the student's claim? Explain your reasoning. В І x X2 5 Ω Ee

Choi Company manufactures two skin care lotions, Smooth Skin and Silken Skin, from a joint process. The joint costs incurred are $400,000 for a standard production run that generates 110,000 pints of Smooth Skin and 140,000 pints of Silken Skin. Smooth Skin sells for $2.80 per pint, while Silken Skin sells for $4.00 per pint. Required: 1. Assuming that both products are sold at the split-off point, how much of the joint cost of each production run is allocated to Smooth Skin using the relative sales value method? 2. If no separable costs are incurred after the split-off point, how much of the joint cost of each production run is allocated to Silken Skin using the physical measure method? 3. If separable processing costs beyond the split-off point are $1.50 per pint for Smooth Skin and $1.00 per pint for Silken Skin, how much of the joint cost of each production run is allocated to Silken Skin using a net realizable value method? 4. If separable processing costs beyond the split-off point are $1.50 per pint for Smooth Skin and $1.00 per pint for Silken Skin, how much of the joint cost of each production run is allocated to Smooth Skin using a physical measure method? (For all requirements, do not round intermediate calculations. Round final answers to nearest whole dollar amounts.) 1. 2. Relative sales value method - Smooth Skin Physical measure method - Silken Skin Net realizable value method - Silken Skin Physical measure method - Smooth Skin 3. 4.

The effect of temperature on the rate of a reaction was studied and the following data obtained: k (s¹) T (°C) 7.98x10-4 9 1.16x10-3 14 1.79x10-3 20 2.54x10-3 25 4.93×10-3 35 7.64x10-3 42 1.23x10-² 50 1.47x10-2 53 It is known that the variation of the rate constant k with the absolute temperature T is described by the Arrhenius equation: k = A exp [(-E₂ The effect of temperature on the rate of a reaction was studied and the following data obtained: k (s¹) T (°C) 7.98x10-4 9 1.16x10-3 14 1.79x10-3 20 2.54x10-3 25 4.93×10-3 35 7.64x10-3 42 1.23x10-² 50 1.47x10-2 53 It is known that the variation of the rate constant k with the absolute temperature T is described by the Arrhenius equation: k = A exp [(-E₂ )/(RT)] where E, is the activation energy, R is the universal gas constant and A is the pre-exponential factor (units of the rate constant). Taking the natural logarithm of both sides affords: Ea In k = In A- RT For a plot of y = Ink versus x = 1/T, calculate the slope of the best straight line using linear regression.

Choi Company manufactures two skin care lotions, Smooth Skin and Silken Skin, from a joint process. The joint costs incurred are \( \$ 410,000 \) for a standard production run that generates 290,000 pints of Smooth Skin and 130,000 pints of Silken Skin. Smooth Skin sells for \( \$ 2.50 \) per pint, while Silken Skin sells for \( \$ 4.00 \) per pint. Choi Company manufactures two skin care lotions, Smooth Skin and Silken Skin, from a joint process. The joint costs incurred are \( \$ 410,000 \) for a standard production run that generates 290,000 pints of Smooth Skin and 130,000 pints of Silken Skin. Smooth Skin sells for \( \$ 2.50 \) per pint, while Silken Skin sells for \( \$ 4.00 \) per pint. Requlred: 1. Assuming that both products are sold at the split-off point, how much of the joint cost of each production run is allocated to Smooth Skin using the relative sales value method? 2. If no separable costs are incurred after the split-off point, how much of the joint cost of each production run is allocated to Silken Skin using the physical measure method? 3. If separable processing costs beyond the split-off point are \( \$ 1.60 \) per pint for Smooth Skin and \( \$ 1.30 \) per pint for Silken Skin, how much of the joint cost of each production run is allocated to Silken Skin using a net realizable value method? 4. If separable processing costs beyond the split-off point are \( \$ 1.60 \) per pint for Smooth Skin and \( \$ 1.30 \) per pint for Silken Skin, how much of the joint cost of each production run is allocated to Smooth Skin using a physical measure method? (For all requlrements, do not round Intermedlate calculations. Round flnel answers to nearest whole doller amounts.)