Question

directions state weigh 5 grams of sodium chloride. give the minimum and maximum amounts of sodium chloride that will satisfy those instructions

Answer 1

The correct weighing measurement of the substance depends upon the device i.e weighing balance being used. The device used should be carefully calibrated for the purpose before use.

When using the balance to weigh the substance one should record the masses including all the significant figures (uncertain and certain digits) to avoid any error.

The direction indicates that the measured quantity of the sodium chloride should be equal to 5 grams plus minus a small quantity (correction factor). Hence sodium chloride sample weighing:

Minimum = 4.8 g

Maximum = 5.2 g

Will satisfy the requirement of the instructions