Under the mass-change criteria, which statement describes a pass?

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Multiple Choice

Under the mass-change criteria, which statement describes a pass?

Mass-change criteria determine when a sample’s slight mass fluctuations during handling are still acceptable for a valid test. Small losses can happen if material sticks to containers or spills, while small gains can occur from moisture uptake. The standard defines precise limits so these routine variations don’t unfairly fail a test. A pass is achieved when the sample loses less than 0.08% of its mass, or it gains no more than 0.04% of its mass. This means if you start with 1000 g, you’d still pass if you lose up to 0.8 g or gain up to 0.4 g. These tight tolerances keep results accurate while accounting for normal handling and measurement variances. Choices with looser limits would let larger deviations pass, and the option that allows any change would defeat the purpose of having a mass-change standard.

Mass-change criteria determine when a sample’s slight mass fluctuations during handling are still acceptable for a valid test. Small losses can happen if material sticks to containers or spills, while small gains can occur from moisture uptake. The standard defines precise limits so these routine variations don’t unfairly fail a test.

A pass is achieved when the sample loses less than 0.08% of its mass, or it gains no more than 0.04% of its mass. This means if you start with 1000 g, you’d still pass if you lose up to 0.8 g or gain up to 0.4 g. These tight tolerances keep results accurate while accounting for normal handling and measurement variances.

Choices with looser limits would let larger deviations pass, and the option that allows any change would defeat the purpose of having a mass-change standard.

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