Nitrogen gas is stored at 200 kPa and 100 K in a rigid tank with a volume of 0.5 m3. If the temperature of the gas is increased to 400 K, what is the final pressure in the tank (answer in kPa)?

The final temperature is 800KPa

Explanation:

The following were obtained from the question:

P1 = 200 kPa

T1 = 100 K

T2 = 400 K

P2 =?

Since the tank is rigid, the volume of the tank is constant.

Using P1/T1 = P2/T2, we can obtain the new pressure as illustrated below:

200/100 = P2 /400

Cross multiply to express in linear form:

100 x P2 = 200 x 400

Divide both side by 100

P2 = (200 x 400) /100

P2 = 800KPa

The final temperature is 800KPa

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the atomic number of carbon is six, which means that a carbon atom has six protons. carbon has three naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. which of these statements are true about carbon and its isotopes? select all that appl

answer : third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol

explanation :

let us write down the given equations

equation 1 :

equation 2 :

equation 3 :

let us use hess's law to find out which 2 equations can be added to get the third equation.

let us reverse equation 2 and multiply it by 2. the new equation that we get is,

equation 4 :

let us add equation 1 & 4

the above equation is similar to equation 3 but has different value for dhrxn.

therefore third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol