1. 3M9CI, Coefficient: Subscript for Mg: Subscript for Cl: 2. V205 Coefficient: Subscript for v: Subscript for O: 3. 4K,CO, Coefficient: Subscript for K: Subscript for C: Subscript for O: 4. NaC,H,0, Coefficient: Subscript for Na: Subscript for C: Subscript for H: Subscript for O:
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- A chemist working in a hospital clinical laboratory obtained the following values for uric acid in blood serum: 4.63, 4.58, 4.82, 4.31, 4.67 and 4.60 mg%. What value should be reported as the mean? Value of QT at 90 % confidence level is 0.56.The percentage of an additive in gasoline was measured six times with the following results: 0.13; 0.12; 0.16; 0.17; 0.20 and 0.11%. What is the 99% confidence interval for the additive percentage?Which of the following has the smallest value of IE1? O S Se Te
- Calculate deltaH1 Please provide 3 sig figs, units are KJ/mol, please only give number value in answer. Mg(s) + 1/2O2(g) --> MgO(s) deltaH1 = ? Mg(s) + 2H+(aq) --> Mg2+(aq) + H2(g) deltaH2 = +10.1 kJ/mol MgO(s) + 2H+(aq) --> Mg2+(aq) + H2O(l) deltaH3 = -5.00 kJ/mol 1/2O2(g) + H2(g) --> H2O(l) deltaH4 = -286.0 KJ/molGiven the following data forMass of test tube, beaker and cyclohexane = 100.17 gMass of test tube and beaker = 84.07 gFreezing point of cyclohexane = 6.59 oCMass of weighing paper + naphthalene =1.080 gMass of weighing paper = 0.928 gFreezing point solution = 5.11oCKf = 20.8oC/mDetermine the followinga. mass of cyclohexane in g (2 decimal places); _____b. mass of naphthalene in g (4 decimal places); _____c. freezing point depression (2 decimal places); _____d. molality of solution (3 significant figures); _____e. moles of naphthalene (3 significant figures); _____f. molar mass of naphthalene, experimentally (3 significant figures); _____g. % error if theoretical molar mass of naphthalene is 128.17 g/ mole, USE ABSOLUTE VALUE (3 significant figure); ____A Chemistry 20 student uses a thermometer and a hot plate and measures the boiling point of ethyl alcohol to be 74.3 ºC. Then, she looks in a reference book and finds that the actual boiling point of ethyl alcohol is 78.4 ºC. What is her percent error?
- Which of the following correlation coefficients indicates the strongest relationship between variables?At the end of the experiment, it was discovered that the thermometer had not been calibrated. When it was calibrated, it was found that the thermometer read 0.50 C low. What effect would thus thermometer reading have on the reported change in H neoutzn calculated above?Straight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula CnH2n+¡COOH where n is an integer than ranges from 1 to 18. What would be the %C by mass if n = 12? Atomic weights: C=12.01, H=1.01, 0=15.99. Input values only with 2 decimal places.