Basic laboratory safety rules
1. Proper dressing must be observed, no loose clothing, hair and closed shoes must be
worn.
2. Identify the location of electricity switches, fire-fighting equipment, first aid kit, gas
and water supply systems.
3. Keep all windows open whenever working in the laboratory.
4. Follow all instructions carefully and never attempt anything in doubt.
5. No eating or drinking allowed in the laboratory.
6. Ensure that all electrical switches, gas and water taps are turned off when not in use.
7. Keep floors and working surfaces dry. Any spillage must be wiped off immediately.
8. All apparatus must be cleaned and returned in the correct location of storage after
use.
9. Hands must be washed before leaving the laboratory.
10. Any accidents must be reported to the teacher immediately.
Moraa orina answered the question on April 3, 2018 at 17:06
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Example
100 cm3
of fresh water of density 1,000 kgm-3
is mixed with 100 cm3
of sea water of density
1030 kgm-3
. Calculate the density of the mixture.
(Solved)
Example
100 cm3
of fresh water of density 1,000 kgm-3
is mixed with 100 cm3
of sea water of density
1030 kgm-3
. Calculate the density of the mixture.
Date posted:
April 3, 2018
.
Answers (1)
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