Multiple Choice
Which of the following is the correct conversion of 0.25 mg to mL, assuming the density of the substance is 1.00 g/mL?
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1. Intro to General Chemistry
SI Units
Multiple Choice
Which of the following is the correct SI unit for measuring mass?
A
kilogram
B
pound
C
gram
D
ounce
Verified step by step guidance1
Understand that the International System of Units (SI) defines standard units for various physical quantities, including mass.
Recall that the SI base unit for mass is the kilogram, which is the only SI unit among the options provided.
Note that gram is a metric unit of mass but is a derived unit (1 kilogram = 1000 grams), not the base SI unit.
Recognize that pound and ounce are units of mass used primarily in the imperial system, not SI units.
Conclude that the correct SI unit for measuring mass from the given options is the kilogram.
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