Answer:
See the answer below
Explanation:
<em>The duration of flushing the eyes at the eyewash station in case of accidental contact with chemicals depends of the nature of the chemical.</em>
If the chemical is known to be a <u>non-irritant or mild-irritant</u> one, a <u>5-minute </u>washing time is recommended as the first aid. before seeking the help of a physician,
For <u>moderate to severe irritant</u> chemicals, an immediate <u>15-20 minutes</u> washing period is recommended before seeking further medical help.
For <u>corrosive and strong alkalis</u> chemicals, <u>30 and 60 minutes</u> washing are recommended respectively before seeking the attention of a physician.
However, if the nature of the chemical is unknown,<u> a minimum of 20-minutes washing is generally recommended</u> as first aid before seeking immediate medical help.
Ice is less dese than water
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Below is the solution:
37.9*1000*1.03=39037 g=39.037 kg
39.037*2.21=86.28 lb
<span>86.28+59.5=145.78 lb <450 lb</span>
100%-64% to obtain the remaining% of the isotopes
= 36%
then,
atimic weight= (64×51) + (36×51)
=5100 amu
