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Physical Chemistry
what are covalent bonds
Physical Chemistry
calculate the RMS speed of nitrogen molecule at 27 degree Celsius ?
Physical Chemistry
A researcher studying the nutritional value of a new candy places a 3.40-gram sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.56 °C. If the heat capacity of the calorimeter is 32.40 kJ•K–1, how many nutritional Calories are there per gram of the candy?”
Physical Chemistry
The stock solution for this experiment contains 0.7218g of KNO3 in 1000cm3 of water. the manual claims that this solution represents a 100ppm solution of NO3-N. how do I prove this.
Physical Chemistry
the stock solution for this experiment contains 0.7218g of KNO3 in 1000cm3 of water. the manual claims that this solution represents a 100 ppm solution of NO3-N. how do i prove that this is the case.
Physical Chemistry
can we prepare high concentration solution from low concentration solution?
Physical Chemistry
An automobile tire has a volume of 20 L where the air pressure (in the tires) is 180 kPa and temperature 21 degrees C. The standard gas constant for air is 287 mN/kgK. What is the air density and weight? After driving two hours, the tire temperature has risen 30 degrees C. Estimate the tire pressure, and state any assumptions you make.
Physical Chemistry
the half life of a radio active metal is one hour.what would be the time required for 99.9% completion?
Physical Chemistry
two solutions of sodium chloride and glucose in water, both has 0.1molal strength, which one has a higher boiling point? why?
Physical Chemistry
The half-life for a first-order reaction is 32 sec.What was the original concentration if,after 2.0 minuites, the concentration is 0.062 M ?
