Calculate the molarity and the approximate molecular
A 1.00-gram sample of a biological material was dissolved in enough water to give 100.0 mL of solution. The osmotic pressure of the solution was 2.80 torr at 25oC. Calculate the molarity and the approximate molecular weight of the material.
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A(n) 0.65 mole quantity of O2 originally at 85 degrees celcius is cooled such that is now occupies 4.0 L at 20 degrees celcius. What is the final pressure exerted by the gas?
A solution of 50 mL of 0.3 M R-enantiomer is mixed with 10 mL of 0.5 M S-enantiomer. The observed rotation is + 7.6 degrees. Calculate the enantiomeric excess of the solution, the specific rotation of each sample, and the percent composition of ea
Each of the following provides a statistical hypothesis, the observed test statistic and corresponding degrees of freedom, and the true population parameter(s), which was unknown to the experimenter.
State the hypotheses that should be used if we would like to determine whether the mean annual Medicare spending in Indianapolis is lower than the national mean.
Taking the systematic approach, write the pertinent reaction equations, mass balance, charge balance, and other possible equations. Derive an equation for the calculation of [H+] in the 0.1M HF solution.
The probability of a student getting a A grade in an economics class is .24 and that of getting a B grade is .28. what is the probability that a randomly selected student from this class will get an A or a B in this class? Explain why this probabi
A(n) __________ statistic reflects the overall lack of fit between the expected and observed frequencies.
A gas phase reaction involves N2O5 decomposition to NO2 and O2 in aclosed flask with a total volume of 3.71 L. If the reaction isfirst order with respect ito N2O5 and initially the flask contains553 N2O5.
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