Answer:
Explanation:
The following precautions should be followed for a safe and efficient laboratory environment:
The TLC plate should be laid on a paper towel, to ease picking it from the bench top.
The used TLC spotters and the used TLC plates in the appropriate waste containers provided for this purpose should be placed in the blood.
Spills should be cleaned up and contaminated surfaces should be washed with water.
The pipette and/or glassware should be rinsed again with the distilled water, in case there is the slightest doubt about the contamination.
Everything used should be washed with distilled water, including the pipettes.
Answer:
The principle of cross-cutting relationships states that a fault or intrusion is younger than the rocks that it cuts through. ... So the fault must be the youngest formation that is seen. The intrusion (D) cuts through the three sedimentary rock layers, so it must be younger than those layers
Explanation:
The greatest aqueous freezing point is (D) 0.10 KCI
