667.17 (0.63x1059) shsbsbsb
Answer:
In advance
middle
lower
Explanation:
These are the safety precautions needed when carrying out duties in the fume hood.
When planning and preparing to work in a fume hood (a locally designed area to reduce exposure to hazardous fumes). It is advisable to make all equipment readily available at your disposal <u>in advance</u> to reduce and minimize the raising and lowering of the hood sash at intervals.
It is also pertinent to understand that working in the<u> middle </u>of the work surface helps to promote the movement of air and keeps the area neat and tidy.
However, if any case where there is a need to get a new tool or equipment during the process of working in a fume hood, it is advisable to <u>lower </u>the sash at that point in time.
0.52164 kg of Flour
<u>Explanation:</u>
We have to convert lb (pounds) kg (kilograms), by using the conversion unit,
1 lb = 0.4536 kg
So to convert 1.15 lb into kg, we have to multiply 1.15 by 0.4536.
= 0.52164 kg of Flour
So the receipt calls for 0.52164 kg of Flour.
Ans: Ce
Cerium is a chemical element with the symbol Ce and atomic number 58.
Without conducting an experiment, one can determine if a species in a solution is acidic or basic by using a litmus paper.
<h3>Litmus test</h3>
Acidic species would turn a blue litmus paper to red but have no effects on red litmus paper.
Basic species would turn a red litmus paper to blues but have no effects on blue litmus paper.
Thus, in order to determine if a species in a solution is acidic or basic without conducting any experiment, dipping a litmus paper into the solution would give an indication.
More on litmus paper test can be found here: brainly.com/question/1470773
