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An organic compound X contains 40% carbon, 6.7% hydrogen and the rest oxygen. The vapour density of X is 30. The compound reacted with a compound Y and a colourless gas Z which turn limewater milky. On boiling under reflux, the mixture of X and W, gives a sweet smelling liquid G was formed.i. determine the empirical and molecular formula of X.
Derive equation of van't hoff factor when the solute undergo association.
Make a list contain any 4 names and also using for loop to print this list and please print the last string in the list
A ball (m = 0.1 kg) is thrown upwards with a velocity of 8 m/s. At what height will its velocity be 3 m/s?
Structure of benzaldehyde
Explain why different products are obtained in the electrolysis of molten
potassium iodide and in the electrolysis of aqueous solution of potassium iodide
2. The director of a secretarial school believes that its graduates can type more than75
words per minute. A random sample of 12 graduates has been found to have an
average of 77.2 words per minute with a standard deviation of 7.9 words per minute
in a typing test. Using the 0.05 level of significance, test the claim of the director.
A buffer system is prepared by mixing 2 mols of HF(aq) (Ka=7.1 x 10^-4) and 1.8 moles NaF(aq) in a 500 mL solution. A) calculate the pH of the buffer. B) calculate the pH of the buffer after adding 0.2 mols of HCl. C) calculate the pH of the buffer after adding 0.3 mols LiOH
25.0 mL of 0.100 M HC2H3O2 is titrated by a 0.100 M NaOH. A) Write the net ionic equation. B) calculate the pH of the solution after adding 10 mL of NaOH
The United States Department of Agriculture reports that, under its standard inspection system one in every 100 slaughtered chickens passes inspection for faecal contamination. Find the probability that, in a random sample of 6 slaughtered chickens, at least one passes inspection for faecal inspection.
#340153 on Dec 2023