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A patient took some tablets containing magnesium oxide to relieve his gastric pain, which was caused by excess hydrochloric acid. Each tablet contains 3.0g of magnesium oxide. How many tablets should he take to relieve the pain?
The organic compound di-n-butyl phthalate, C16H22O4(l), is sometimes used as a low-density (1.046 g·mL-1) manometer fluid. Compute the pressure (in torr) of a gas that supports a 499-mm column of di-n-butyl phthalate.
a protein subunit from an enzyme is part of a research study and needs to be characterized. a total of 0.160 g of this
The three pKa values for phosphoric acid are 2.3, 7.2, and 12.1. Calculate the amount of each salt that you will need to prepare the buffer.
exhibits Kc = 0.0302 at 342 K. If the standard enthalpy change for this reaction is 10.0 kJ/mol, what is the value of Kc for the following reaction
The pentapeptide leucylglycylthreonyltyrosylalanine is first incubated with FDNB. When the resulting compound is heated to 110 deg C for 24 hrs in the presence of 6M HCl, the solution will contain
Define geometric isomerism; give one example, and the structural formula for each of its isomers.
A mass of 8.9*103kg is placed on a 0.55 L cylinder with area 0.36 m2that contains 0.021 mol of an ideal gas. Determine the final pressure (bar) and temperature of the gas after it has been irreversibly compressed if the final volume is 0.22 L.
Explain what is the pH at the point during a titration when 31mL of 0.200 M HCL has been added to 27mL of 0.0500 MNH3 solutions. HCL is strong acid, Kb = 1.8×10-5 for NH3.
energy in amount of 433 J is added to a 80 g sample of water at temperature of 27 degrees Celsius. What will be the fianl temperature for the water?
How much heat must be absorbed by the six pack to lower its temperature from 25.0C to 5.0C?
A titanium rod of length 10 cm and circular diameter of 2 cm is pulled in tension with a load of 100000 N. The rod elongates by 0.01 cm under the load but recovers to its original length when the load is released.
A mixture of 9.0g CH4 and 9.0g Xe is placed in a container and the total pressure is found to be 0.40atm. Find the partial pressure of CH4
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