Asample consisting of n mol of an ideal gas undergoes a reversible isobaric expansion from volume vi to volume 3vi. find the change in entropy of the gas by calculating, ∫dq / t, where dq = ncpdt. (use the following as necessary: cp and n.)

The change in entropy of gas is

Explanation:

n= Number of moles of gas

Change in entropy of gas =

From the given,

Let "T" be the initial temperature.

Therefore, The change in entropy of gas is

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o