Question:

Weigh out some salt (sodium chloride) following the two methods described below.

Method 1:

a.) zero the balance.

b.) Weigh and record the mass of a 50-mL beaker.

c.) Remove the beaker from the balance and transfer two small scoops of salt to it.

d.) Re-zero the balance.

e.)Weigh and record the mass of the beaker and salt.

f.) Determine the mass of salt in the beaker.

Method 2:

a.) place a 100-mL beaker on the balance and zero the balance using the tare (zero) function.

b.) Remove the beaker from the balance. Do not re-zero the balance.

c.) transfer two small scoops of salt to it.

d.) Place the beaker back on the balance and record the mass of salt in the beaker.