Physical Chemistry Answers

A 375ml bottle of antacid was analysed and found to contain 30g of Mg(OH)2 and 30g of Al(OH)3. The instructions on the bottle recommend a dose of 10ml of the antacid. Calculate the quantity of stomach acid that could be neutralized by taking the recommended dosage of antacid. Stomach acid has a pH of 0.900

The rate constant of a certain first order reaction is doubled when the temperature is increased from
27 °C to 37 °C. Calculate the energy of activation and Arrhenius factor for the reaction.

If an atom has no charge does it have more neutrons than protons or electrons

The atomic packing factor of iron decreases by what % when it is cooled from 1000 to 900 o C (iron is bcc at lower and fcc at higher temperature) Calculate the number of Co ions released (as m×10n ) in a year from the head (14 mm dia) of a hip joint prosthesis made of an alloy containing 45% Co). The wear rate of the head is 0.11 mm/yr and all the atoms become ionised. Density of Co = 8.83 gm/cc, Atomic weight of Co = 58.93

Calculate the de Broglie wavelength associated with a ball of mass 0.50 kg moving
with a velocity of 20 m s−1
.

According to Clausius-Clayperon equation___?
Show Options
A. vapour pressure of any substance increase inversely with temperature
B. vapour pressure of any substance increase linearly with temperature
C. vapour pressure of any substance does not increase inversely with temperature
D. vapour pressure of any substance does not increase linearly with temperature

The following laws have been developed into equation of gas behaviors except A.avogadro\’s B.boyle\’s C.faraday\’s D. Gay-lussacs\s

The following laws have been developed into equation of gas behaviors except ?

What are the fundamental concept that are needed to model the behavior of gases

Taking with example write the mechanism of Mannich reaction?