Answer:
Option A. 0.330 atm.
Explanation:
To know the correct answer, we simply do the following:
1. Conversion of 251 torr to atm
760 torr = 1 atm
Therefore,
251 torr = 251 torr / 760 torr × 1 atm
251 torr = 0.330 atm
2. Conversion of 251 torr to psi
1 torr = 0.0193 psi
Therefore,
250 torr = 250 torr / 1 torr × 0.0193 psi
250 torr = 4.825 psi
From the above illustrations, 251 torr is equivalent to both 0.330 atm and 4.825 psi. Therefore, only option A is correct.
660.857143 kg / m3, I think and idk if it's rounded
Answer:
<u><em>TRUE</em></u> ,hope it helped you
Explanation:
Answer:
B. pour the reagent into a small beaker before using it
Explanation:
Let's explore all the mentioned practice
A. Leftover reagents should not be discarded in the sink but discarded according to the disposal method present in the safety data sheet (SDS) of the chemical.
B. Reagents should be poured in a clean beaker for use to avoid contamination in the original reagent bottle
C. This is not a good practice, as the plastic pipet tends to contain some impurity in its tip.
D. This is also a bad practice. Firstly, a reagent should be taken according to the need. If there is leftover, it should be discarded as it most probably contains contamination in it
