Physical Chemistry Answers

how can you prepare acetoacitic ester from acetoacetic ester, how will you get :
1.monocarboxylic acid

if 20 g of steam at 100c were added to 50 g of water and 50 g of ice at 0c, find the final temperature.

n the year 2007, an estimated amount of 31 billion tons of carbon dioxide (CO2) was emitted worldwide due to fossil fuel combustion and cement production. Express this mass of CO2 in grams without exponential notation, using an appropriate metric prefix

In molecular terms, explain how do surfactants reduce the surface tension of water after adsorbtion at the air-water interface.

Born Haber Cycle

Polarization

which hybridised orbital involve in so2 out of px,py,pz and what its shape ........pls explain its hybridisation in detail

how would i solve and thermal chem&phase change equation?
For example, How much energy do you put in to raise the temperature of 1 gram of water 26.8 celcius?

1) How many mL of 0.895 M hydrochloric acid should be added to excess MnO2(s) to obtain 6.83 x 10^8 nL of chlorine gas at 22 degrees C and 736 torr?

2)An unknown halogen was allowed to effuse through a small opening under constant pressure conditions. It requires 79 s for 1.0 L of the unknown to effuse. Under identical conditions it required 28 s for 1.0 L of neon to effuse. Determine the molecular formula of the unknown halogen.

3) A 3.6 L flask contains 28.82 mg of ethane, 3.147 x 10^4 mg of oxygen, and 22.56 mg of ammonia at 74.43 degrees C. a)Determine the rms speed for ethane, b)the average speed for the oxygen, and c)the most probable speed for ammonia. d)calculate the average kinetic energy per molecule of each gas.