Answer:
The 8-hour TWA exposure for the employee is 101 ppm and it exceeds the OSHA PEL of 100 ppm for ethylbenzene.
Explanation:
The TWA for 8 hours is calculated by the sum of airbone concentrations multiplied by the time it has been exposed to that period. The total is divided by 8 which refers to the 8 hours total the employee has been exposed.
TWA = (125x2+88x2+112x2.5+70x1.5)/8.
The OSHA PEL is a known number for every compound and it can be find in PEL tables. In the case of ethylbenezene, it is 100 ppm.
When there is more thermal energy, there are less intermolecular forces. I hope this answers your question ☺️☺️
Answer:
0.783 kg
Explanation:
You must make the conversions:
atoms of Pb ⟶ moles of Pb ⟶ grams of Pb ⟶ moles of Pb
Answer:
Fe(s) + Cu2+(aq) ===> Fe2+(aq) + Cu(s)
