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The LD for a drug is the dose that would be fatal for 50% of the population. The LD for aspirin in rats is 1.75 grams per kilogram of body weight. Compute how many aspirin tablets a human weighing 155 pounds would have to take to reach this dosage. (1 aspirin = 5 grains = 325mg).
select the element potassium k. give the wavelength in aringngstroumlms the frequency and the energy of the broadest
A 65 kg man is on ice skates. The skates' blades have a total contact area of 2.0 cm^2. How much pressure does the man exert on the ice
How many joules of energy are needed to melt 54 grams of ice at its melting point? Assume that the molar heat of fusion of ice is 6 kJ/mol.
What is the amount of 10.00% acetic acid you would need to add to 100.0 ml of milk in order to bring the final acidity to 1.00% acetic acid
952 cm3 container of gas is exerting a pressure of 108 kpa while at a temperature of 48 degrees celsius. calculate the pressure of this same amount of gas in a 1236 cm3 at a temperature of 64 degrees celsius.
Air bag in automobile inflate when sodium azide, NaN3 rapidly decomposes to its components elements: 2NaN3 (s)= 2Na(s) + 3N2 (g). How many moles of N2 are formed by the decomposition of 2.50 moles of NaN3
Show the chemistry involved in dissolving iron(II)hydroxide with a strong sodium cyanide solution.
The solution of iron (III) chloride used in this experiment is 0.02M. Determine the amount of iron (III) chloride hexahrdrate
If the pKa for acetic acid, found in commercial white vinegar is 4.754 at 298K, then calculate the pH, percent ionization, and pOH of a 0.585 M acetic acid of 5% vinegar solution. Do not forget to first determine the Ka, setup an "ICE" table, defi..
Which of the intermolecular forces is the most important contributor to the high surface tension shown by water and What is the quantum of light called?
Hydrogen and iodine gases react to form hydrogen iodide gas. H2(g) + I2(g) → 2 HI(g) At a certain temperature and pressure 0.70 L of H2 reacts with 0.70 L of I2.
which of the following species would be expected to have chemical properties most similar to those of the nitrogen
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