The pressure, p, of a gas varies directly with its temperature, t, and inversely with its volume, v, according to the equation p=nrt/v, where n is the number of molar units and r is the universal gas constant. one molar unit of gas has a pressure of about 1,245 joules at a temperature of 300 degrees kelvin and a volume of 2 liters. what is the pressure of the same number of molar units of the gas at a temperature of 400 degrees kelvin and a volume of 2.5 liters?

The pressure of gas will be 1328 Joules

Step-by-step explanation:

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

  (for same value of n)

where,

= initial pressure of gas = 1245 J

= final pressure of gas = ?

= initial volume of gas = 2 L

= final volume of gas = 2.5L

= initial temperature of gas = 300K

= final temperature of gas = 400K

Now put all the given values in the above equation, we get the final pressure of gas.

Therefore, the final pressure of gas will be 1328 Joules.

1. is 4 and 2. is 3

step-by-step explanation:

so if you look at the first one you see that 1 is to 4 and 2 is to 8 and so on, so you can see for every 1 there is a times 4 so if it were 3 then it would be 3*4 and it is 12

for number 2 it is 3 because 1 is to 3 and 2 is to 6 so for every 1 there is 3 so if it were 3 then there would be 3*3 = 9

for this pair of functions g(x)=x-2 and f(x)=|x| is (g o f)(a)= |a| -2

step-by-step explanation:

g(x)=x-2

f(x)=|x|

(g o f)(a)=?

(g o f)(x)=g(f(x))

(g o f)(x)=g(|x|)

(g o f)(x)=|x|-2

(g o f)(a)=|a|-2