Make a dilution series to get to 1:100. Start with making 1:10 dilution by adding 1mL of sample and 9mL of diluent, now continue the series to get to 1:100.
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Make a dilution series to get to 1:100. Start with making 1:10 dilution by adding 1mL of sample and 9mL of diluent, now continue the series to get to 1:100.
The formula you may use is V1D1=V2D2
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- Make a dilution series to get to 1:100. Start with making 1:10 dilution by adding 1mL of sample and 9mL of diluent, now continue the series to get to 1:100Beaker 0.00200 M Fe(NO3)3, mL 0.00200 M NaSCN, mL total volume, mL 1 3.000 2.000 10.00 2 3.000 3.000 10.00 3 3.000 4.000 10.00 4 3.000 5.000 10.00 5 (blank) 3.000 0.000 10.00 In solutions 1-4 you are adding 3.00ml of 0.00200M Fe3+ to some SCN- solution and dilutiing to a final volume of 10.00ml. What is the new concentration of the Fe3+ due to dilution? Your answer should have 3 sig figs.Substance Melting Points in ℃ Benzoic acid 122.3 ℃ Succinimide 125-127 Urea 133 ℃ Cinnamic acid (trans). 133 ℃ Thiourea 182 ℃ Hippuric acid. 187 ℃ For Questions 1-3 assume that you were given 5.00 g of an unknown A for this lab, one of the six compounds whose melting points you looked up for prelab. 1. You recrystallized A and obtained 2.23 g pure product. What was your percent recovery? That is, what percent of the original mass did you get back? Show your work. 2. Assume you took the melting point of the pure product and it was 123oC. Considering…
- The alcohol content of hard liquor is normally given in terms of the “proof,” which is defined as twice the percentage by volume of ethanol (C2H5OH) present. Calculate the number of grams of alcohol present in 1.00 L of 75-proof gin. The density of ethanol is 0.798 g/mL. Round off to 4 sig. figures for all calculations made prior to final answer and the final answer should be in 3 sig. figurespls complete the 2nd table given the data1. 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)Could someone check this for me, please? I am unsure which part, if any, is being done correctly. The water weights are as they are on the page (first # in qcold and first # in qhot).
- A calibration curve of KCl conductivity (y-axis) vs concentration (mass percent, x-axis) is made. The equation of line of best fit is y = 578.3x + 0.380 and the R 2 is 0.9998. Based on this data what is the mass percent of an unknown KCl solution with a conductivity of 2,788 uS/cm? 6.55 % 6.12 % 4.14 % 3.98 % 4.82 %3 Describe the similarities and differences of the Bradford and Biuret method (400 words)I have an equation and the answer, however im not sure how to do the calculation. Please show how to. Answer is supposed to be 0.20 M m1v1=m2v2 (20mL)V=(13mL)(0.30M) V=0.20 M
- Show complete solutions and enclose all final answers in a box. Round off final answers to 4 decimal places and floating values for intermediate answers. Use 2 decimal places for molecular weights.A student dissolves a Jefferson nickel to make 100.00 mL of solution in a volumetric flask. The student takes a 5.00 mL5.00 mL aliquot of the first solution and dilutes it to make 100.00 mL100.00 mL of a second solution. The student places a sample of the second solution in a cuvette for analysis using spectrophotometry. The molarity of the copper solution in the cuvette was determined by spectrophotometric analysis to be 2.90×10−2 M Cu.2.90×10−2 M Cu. Calculate the mass of copper in the Jefferson nickel used to make the first solution.Show your complete and detailed solution. What is the molecular diameter of N2(g) having a mean free path of 1.14 x 10-9 cm? The sample volume is 1 mL and the density of the sample is 1.124 g/mL.