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A quantity of 7.480 g of an organic compound is dissolved in water to make 300.0 mL of solution. The solution has an osmotic pressure of 1.43 atm at 27°C. The analysis of this compound shows that it contains 41.8 percent C, 4.7 percent H, 37.3 percent O, and 16.3 percent N. Calculate the molecular formula of the compound.
What is the rate law for step 1 of this reaction? ((Express your answer in standard Mastering Chemistry notation.
At 900 titanium tetrachloride vapor reacts with molten magnesium metal to form solid titanium metal and molten magnesium chloride. Write a balanced equation.
What is the boiling point of a mixture composed of 95.0 g HOCH2CH2OH (ethylene glycol) and 205 g H2O? The boiling point elevation constant for H2O is 0.512 °C/m.
When 4.220 g of calcium hydroxide is reacted with a 30.0 mL of a 0.200 M sulfuric acid solution how many grams of calcium sulfate and water are formed?
What are the steps to follow when calculating the percent ionization of acid in a buffer solution. example) percent ionization of .20 M benzoic acid in pure water and percent ionization of benzoic acid in a solution containing
Exactly 100 pounds of cane sugar (dextrose), C12H22O11, were accidentally discharged into a small stream saturated with oxygen from the air at 25 celcius.
Working with partition function and entropy what is the ratio of the number of particles in the J= 14 to the J=4 level at a temperature of 1900 K?
What is the concentration of OH- in a solution that contains 0.225g of NaOH in 0.250L of solutio.
Pyridine(C5H5N) is a weaker base in H2O than 2,6 lutidine (dimethylpyridine), but we observe that the pyridine-BF3 complex is more stable than the comparable lutidine-BF3. Explain the reason for this inversion in stabilities.
Hemoglobin has a mass of about 67,000 g/mol. It is 0.3335% iron by mass. How many iron atoms are in a molecule of hemoglobin?
A gaseous mixture of O2 and N2 contains 36.8 nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 545 mmHg ?
A 100. mL sample of 0.10 M HCl is mixed with 50. mL of 0.12 M NH3. What is the resulting pH?(kB FOR NH3= 1.8 x 10^-5)
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