Question

when obtaining the mass of a solid substance using a balance you should ____. subtract the mass of the tare paper from the total mass of the substance plus tare paper. neglect the mass of the tare paper and record the value on the balance tare paper is not used when measuring the mass of a solid record the value from the balance as it automatically accounts for the mass of the tare paper

Explanation:

To find the mass of a solid, we need to account for the tare paper. If we record the value from the balance, modern balances can be tared (zeroed) with the tare paper, so the displayed value is just the solid's mass. Let's analyze each option:

• "subtract the mass of the tare paper from the total mass of the substance plus tare paper": This is incorrect because we don't need to do manual subtraction if the balance is tared.
• "neglect the mass of the tare paper and record the value on the balance": Neglecting is wrong as the tare paper's mass would affect the reading unless tared.
• "tare paper is not used when measuring the mass of a solid": Tare paper is often used to hold the solid, so this is incorrect.
• "record the value from the balance as it automatically accounts for the mass of the tare paper": When we tare the balance (set it to zero with the tare paper), the balance subtracts the tare paper's mass, so the reading is just the solid's mass. So this is correct.

Answer:

record the value from the balance as it automatically accounts for the mass of the tare paper