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A sample of methane gas of mass os 15g at 260K and 105kpa expands isothermally and a) reversible, b) irreversible until its pressure is 1.50kpa. calculate the change in entropy of the gases

The population P (in thousands) of Charlotte, North Carolina from 1980 through 2013 can be modeled by P = 321e0.0275t where t = 0 corresponds to 1980.† (Round your answers to the nearest whole number.) (a) What was the population of Charlotte in 2013?

If you have a triangle with sides of lengths 3, 4, and 5, how would you determine if it is a right triangle using the Pythagorean theorem?

Nueral basis of learning and memory 

Section A: Fun with Algebra

1.If (x=7), what is the value of (7x + 1)?

2.Find(k) : if (k - 7 = 2)One basket contains (4a) apples, while another contains (6a) apples. If a = 2, how many apples are there in total?Given (n = 4), what is the value of (n^2 + 5)?