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Need assistance with finding the density of water and all
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- Given the following data, calculate the 95% confidence interval. 0.452 0.453 0.448 0.456 0.458 Average = 0.4534 St. Dev. = 0.003847 1) 0.453 ± 0.004 2) 0.453 ± 0.005 3) 0.4534 ± 0.0048 4) 0.4534 ± 0.0037 5) 0.4534 ± 0.0038Please answer super fast and answer all questions and show calculations For the image attached For 1. a Mass of metal: Trial 1 is 35.0228 g Trial 2 is 35.0915 g Trial 3 is 34.0821 g Mass of water: Trial 1 is 20.0177 g Trial 2 is 20.0250 g Trial 3 is 20.0168 g For delta t of water: Trial 1 is 15.5 C Trial 2 is 15.7 C Trial 3 is 15.1 C For delta t of metal Trial 1 is 80.1 C Trial 2 is 80.2 C Trial 3 is 79.5 C For B my calculated Specific heat is: Trial 1 is 0.462 Trial 2 is 0.467 Trial 3 is 0.4661. Calculate the experimental density of a salt solution and the percent error (same as relative error percent) using some or all the data given below. solubility of NaCl salt in water: 0.357 g/mLmass of empty graduated cylinder: 25.19g mass of graduated cylinder + salt solution: 30.47g total volume of salt solution: 4.98 mLtrue density of salt solution: 1.07 g/mL
- Chemistry Fraction no. Elution Vol. (mL) Abs (λ = 410) Fraction no. Elution Vol. (mL) Abs (λ = 410) 1 (PB pH 6.0) 1 0.0050 11 11 0.0041 2 2 0.0032 12 12 0.0060 3 3 0.0040 13 13 0.0064 4 4 0.0064 14 14 0.0063 5 5 0.0067 15 15 0.1109 6 6 0.0067 16 16 2.8902 7 7 0.0050 17 17 0.8500 8 (PB pH 8.0) 8 0.0049 18 18 0.2019 9 9 0.0052 19 19 0.0378 10 10 0.0050 20 20 0.0073 Use the data above to plot an elution profile, in which the absorbance is on Y-axis, and elution volume (volume = fraction number) is on X-axis. The elution profile must indicate at (1) which point the pH change occurred, (2) the fraction(s) which contain the highest myoglobin content, and (3) the maximum absorbance detected.Please answer fast it’s very important and urgent I say very urgent so please answer super super fast please For the image attached For 1. a Mass of metal: Trial 1 is 35.0228 g Trial 2 is 35.0915 g Trial 3 is 34.0821 g Mass of water: Trial 1 is 20.0177 g Trial 2 is 20.0250 g Trial 3 is 20.0168 g For delta t of water: Trial 1 is 15.5 C Trial 2 is 15.7 C Trial 3 is 15.1 C For delta t of metal Trial 1 is 80.1 C Trial 2 is 80.2 C Trial 3 is 79.5 C For B my calculated Specific heat is: Trial 1 is 0.462 Trial 2 is 0.467 Trial 3 is 0.466Chemistry Calculate the mean, standard deviation, coefficient of variation given the following data Initial volume ( 0.00 + 0.05ml) Final volume ( 30.95 + 0.05ml) Discharged volume ( 30.95 + 0.05ml)
- Express 20,000ppb as a percentage strength A. 2% B. 0.02% C. 0.00002% D. 0.002%1. 500.0 mL 0.2 M KI2. 500.0 mL 0.2 M KCl3. 500.0 mL 0.1 M K2S2O84. 500.0 mL 0.1 M K2SO45. 500.0 mL 4.0 mM Na2S2O3 (from Na2S2O3∙5H2O)pls compelete the 2nd table given the dataGive two examples of the Scale Factor Error (one of the types of systematic error). Please do not give what is already given in the example. I need it ASAP Thank you
- Calcium Chloride Ammonium Chloride Trial 1 Trial 2 Trial 3 Trial 1 Trial 2 Trial 3 Mass of water 100g 100g 100g 100g 100g 100g Mass of salt 5.36g 10.28g 15.10g 5.29 10.43 15.31 Moles of salt Initial T 21.0 21.0 21.0 20.0 20.0 20.0 Final T 29.6 36.2 43.5 17.1 13.2 10.1 ΔT 8.6 15.2 22.5 -2.9 -6.8 -9.9 ΔH(Joules) ΔH(kj/mol)Hello can this problem be simplified In administering a mixture of NO2 and O2 by flow meters the target total flow is 14 L/min. What flow , in L/min should the NO2 have to administer 31 % NO2 ? (answer to 1/10 X.X and include units) Answer units2. A student performed four trials to determine the molar mass of butane in Gas Laws lab. The average of the four trials was 68.7 g/mol and the standard deviation was 8.2 g/mol. How should his result be reported in a "mean +/- st. dev." format? Please make sure that you have proper number of sig figs. a) 61 g/mol to 77 g/mol b) 68.7 +/- 8.2 g/mol c) 69 +/- 8 g/mol d) 68.7 +/- 8 g/mol