An unknown volume of water is heated from 60C to 95C upon absorbing 2.30 kJ. The density of water is (density=1g/ml). What is the unknown volume of water? Answer using the G.U.E.S.S Method.
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An unknown volume of water is heated from 60C to 95C upon absorbing 2.30 kJ. The density of water is (density=1g/ml). What is the unknown volume of water?
Answer using the G.U.E.S.S Method.
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- A student performed the first determination in Part 2. They reacted 59.11 g of 1 M HCl with 0.7347 g of magnesium oxide. The temperature before mixing was 20.2°C and the temperature after mixing was 28.7°C. Calculate the heat flow (qrxn) based on this student's data. Report your final answer, in kJ, to 1 decimal place1a. List THREE (3) advantages of internal standardization method than normal calibration.A student performed the first determination in Part 2. They reacted 61.33 g of 1 M HCl with 0.6615 g of magnesium oxide. The temperature before mixing was 20.0°C and the temperature after mixing was 28.2°C. Calculate the heat flow (qrxn) based on this student's data. Report your final answer, in kJ, to 1 decimal place and only include the numerical value (no units). Do not use scientific notation to answer this question.
- 1. What is the mEq of silver nitrate? 170 0.0170 0.170 17.0 2. How much (mL) silver nitrate is required for the standardization? 4.995 49.950 49.590 45.990 * MW of silver nitrate = 170 g/mol * Please take note that Im looking for the silver nitrateRemember: Kw= 1.0 x 10^-14 Kw= Ka x KbConversion : 1 kg steam = ..... kcal 1 kg steam = ..... cal 1 kg steam = ..... kw Please guide how to convert above numbers?
- One student calibrated a 50-mL burette by using the mass of water delivered. The student used an analytical balance which was previously calibrated by STEEL (density = 7.8 g/mL). During calibration, the temperature of water was found to be 19.0oC. The density of water at this temperature is 0.9984 g/mL. The results of the calibration by the student is shown in the table below: Apparent burette reading, mL A-10.05 ml, B- 20.04ml, C- 30.08ml, D- 40.07 ml, E- 49.98ml Weight H2O delivered, g A -10.03g, B- 20.09g, C- 30.05g, D- 40.02g, E- 49.83g 35. What is the true mass of water delivered in A? A) 10.03B) 10.04C) 10.05D) 10.06E) 10.07 36. What is the true mass of water delivered in B?A) 20.12B) 20.13C) 20.14D) 20.15E) 20.16 37. What is the true mass of water delivered in C?A) 30.13B) 30.11C) 30.10D) 30.09E) 30.08 38. What is the true mass of water delivered in D?A) 40.09B) 40.08C) 40.07D) 40.06E) 40.05 39. What is the true volume of water delivered in A?A) 10.00B) 10.02C) 10.04D)…Convert 1 bar to lbm/ft-s2 Please show step by step solution. Thanks.An analyst analyse two cans of beer each 5 times to determine the ethanol contents. The first can yielded an average of 4.92% ethanol and the second can an average of 5.12% ethanol. spooled = 0.45% for all 10 analyses. Do the data indicate a statistical difference in ethanol contents between the two cans of beer with 99% confidence? Show all equations.
- Glycerin has a density of 1.26g/ml/ Will 6% w/v of the theobroma oil in glycerin contain a higher oil content than 6% w/w if both preparations have the same net weight? Show computations, for each and explain. Thanks! Both have equal amounts YES Comparison is not applicable NoChemistry Heat of Solution (ΔHsoln) for NH4NO3 TRIAL 1 TRIAL 2 Mass of NH4NO3: (NH4NO3 = 80.05 g/mol): 5.06g 5.01g Volume of Water (mL): 50 mL 50 mL Temperature (°C): 1 min: 22.7°C 22.8°C 2 min: 22.7°C 22.8°C 3 min: 22.7°C 22.8°C 4 min: 14.6°C 22.8°C 5 min: 15.6°C 16.0°C 6 min: 16.0°C 16.0 °C 7 min: 16.0°C 16.0 °C 8 min: 16.2°C 16.2 °C ΔT = (Tfinal - Tinitial): 6.5 6.6 Mass of Calorimeter + Solution (g): 226.22g 226.48g Mass of Calorimeter empty (g): 174.58g 175.04g Mass of Solution (g): 51.64g 51.44g CALCULATIONS PART A: qcalorimeter(cal) = (0.961 cal/g °C) · (m) · (ΔT): cal cal qreaction=-qcalorimeter= cal cal #moles NH4NO3: mol mol ΔHsoln=(qreaction/moles NH4NO3: cal/mol cal/mol Average ΔHsoln(NH4NO3) cal/mol cal/mol %error= % % qreaction=- qcalorimeter.When answering this problem, report the answer with the appropriate number of significant figures. When entering units, use proper abbreviated units with proper capitalization. Hydrogen peroxide, a disinfectant, contains 3.0% (w/w) hydrogen peroxide in water. This means there are 3.0 grams of hydrogen peroxide in every 100. grams of solution. Assuming this solution has a density of 1.00 g/mL, what is the molar concentration of this solution? Note: Your answer is assumed to be reduced to the highest power possible. Answer: _____x10 ____power_____units
