Answer:
W=-37.6kJ, therefore, work is done on the system.
Explanation:
Hello,
In this case, the first step is to compute the moles of each gas present in the given mixture, by using the total mixture weight the mass compositions and their molar masses:

Next, the total moles:

After that, since the process is isobaric, we can compute the work as:

Therefore, we need to compute both the initial and final volumes which are at 260 °C and 95 °C respectively for the same moles and pressure (isobaric closed system)

Thereby, the magnitude and direction of work turn out:

Thus, we conclude that since it is negative, work is done on the system (first law of thermodynamics).
Regards.
My answer will be B and D
Answer:
1) Element
2) Compound
3) Element
4) Mixture
5) Compound
6) Element
7) Compound
8) Mixture
9) Mixture
10) Mixture
11) Compound
12) Mixture
Explanation:
A compound refers to a combination of two or more atoms of the same or different elements Eg NH3.
A mixture refers to any combination of substances which do not chemically reavt together and are separable by physical methods.
An element refers to a substance that contains only one type of atom.
The impact that the oil spill has is environmental impacts.