A0.5865-g sample of lactic acid (hc3h5o3) is burned in a calorimeter whose heat capacity is 4.812 kj/oc. the temperature increases from 23.10 °c to 24.95 °c. calculate the heat of combustion of lactic acid (a) per gram and (b) per mole.

a) 15.2 kJ/g

b) 1367 kJ/mol

Explanation:

Given:

Mass of lactic acid = 0.5865 g

Heat capacity C of calorimeter = 4.812 kJ/C

Initial temperature, T1 = 23.10 C

Final temperature, T2 = 24.95 C

To determine:

Heat of combustion/gram and heat/mole lactic acid

Calculation:

Molar mass of lactic acid = 90.08 g/mol

The heat of combustion is given as:

where C = heat capacity of calorimeter

T1 and T2 are the initial and final temperatures

a) heat of combustion per gram

b) heat of combustion per mole

a sequence is a function whose domain is the set of natural numbers.

natural numbers are all the negative and positive integers

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".