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Questions and Answers
What is the primary unit of volume in the International System of Units (SI)?
What is the primary unit of volume in the International System of Units (SI)?
Which of the following is equivalent to 1 milliliter?
Which of the following is equivalent to 1 milliliter?
What is the relationship between 1 kilogram and 1 gram?
What is the relationship between 1 kilogram and 1 gram?
Which unit is not part of the metric system of weight?
Which unit is not part of the metric system of weight?
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What is the equivalent of 1 quart in fluid ounces?
What is the equivalent of 1 quart in fluid ounces?
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Which unit is the internationally recognized decimal system of weights and measures?
Which unit is the internationally recognized decimal system of weights and measures?
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What is the most common instrument for measuring volume in pharmacy practice?
What is the most common instrument for measuring volume in pharmacy practice?
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In pharmaceutical measurement, what does w/v denote?
In pharmaceutical measurement, what does w/v denote?
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What is the basis of an ointment in pharmaceutics?
What is the basis of an ointment in pharmaceutics?
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What component of a solution is usually present in the greatest amount?
What component of a solution is usually present in the greatest amount?
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What is used to express the ratio of a solid ingredient and a liquid vehicle in pharmaceutical preparations?
What is used to express the ratio of a solid ingredient and a liquid vehicle in pharmaceutical preparations?
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What is the main criteria for selecting implements for pharmaceutical measurement?
What is the main criteria for selecting implements for pharmaceutical measurement?
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What type of instruments are commonly used for measuring small volumes in pharmacy practice?
What type of instruments are commonly used for measuring small volumes in pharmacy practice?
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What is the equivalent of 1 gallon in UK measurements?
What is the equivalent of 1 gallon in UK measurements?
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(kg) 29.57 mL is equivalent to what unit of measurement?
(kg) 29.57 mL is equivalent to what unit of measurement?
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What is the primary unit of weight in the International System of Units (SI)?
What is the primary unit of weight in the International System of Units (SI)?
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Which of the following is equivalent to 1 deciliter?
Which of the following is equivalent to 1 deciliter?
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What is the relationship between 1 milligram and 1 gram?
What is the relationship between 1 milligram and 1 gram?
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What is the equivalent of 1 pint in fluid ounces?
What is the equivalent of 1 pint in fluid ounces?
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In pharmaceutical measurement, what does w/v denote?
In pharmaceutical measurement, what does w/v denote?
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What type of instruments are commonly used for measuring small volumes in pharmacy practice?
What type of instruments are commonly used for measuring small volumes in pharmacy practice?
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What is the equivalent of $4545$ mL in UK measurements?
What is the equivalent of $4545$ mL in UK measurements?
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In pharmaceutical measurement, what is the primary unit of volume used in the International System of Units (SI)?
In pharmaceutical measurement, what is the primary unit of volume used in the International System of Units (SI)?
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Which of the following is equivalent to $1$ kilogram?
Which of the following is equivalent to $1$ kilogram?
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What is the equivalent of $29.57$ mL in UK measurements?
What is the equivalent of $29.57$ mL in UK measurements?
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In pharmacy practice, which instrument is commonly used for measuring small volumes?
In pharmacy practice, which instrument is commonly used for measuring small volumes?
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What is the relationship between $1$ pound ($lb, Avoirdupois$) and $1$ kilogram ($kg$)?
What is the relationship between $1$ pound ($lb, Avoirdupois$) and $1$ kilogram ($kg$)?
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What does the ratio w/v denote in pharmaceutical preparations?
What does the ratio w/v denote in pharmaceutical preparations?
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Which unit is not part of the metric system of weight?
Which unit is not part of the metric system of weight?
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(kg) 29.57 mL is equivalent to what unit of measurement?
(kg) 29.57 mL is equivalent to what unit of measurement?
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What is used to express the ratio of a solid ingredient and a liquid vehicle in pharmaceutical preparations?
What is used to express the ratio of a solid ingredient and a liquid vehicle in pharmaceutical preparations?
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Study Notes
Volume and Weight Measurement in SI
- The primary unit of volume in the International System of Units (SI) is the liter (L).
- One milliliter (mL) is equivalent to cubic centimeters (cc) or 0.001 liters.
- One kilogram (kg) is equal to 1,000 grams (g).
- The metric unit not part of the weight system is the pound (lb).
Fluid Volume Conversions
- One quart is equivalent to 32 fluid ounces (fl oz).
- One gallon in UK measurements is approximately 4.546 liters.
- One pint is equivalent to 16 fluid ounces (fl oz).
- One deciliter (dL) is equivalent to 100 milliliters (mL).
- 29.57 mL is equivalent to 1 fluid ounce (fl oz) in the US measurement system.
Pharmaceutical Measurements
- In pharmaceutical contexts, "w/v" stands for weight/volume, expressing the amount of solute in a certain volume of solution (e.g., grams per 100 mL).
- The primary component of an ointment is the base, which is the bulk of the formulation containing active ingredients.
- The solvent in a solution is usually present in the greatest amount, often referred to as the vehicle.
Measurement Tools in Pharmacy
- Common instruments for measuring volume in pharmacy practice include graduated cylinders and pipettes, particularly for small volumes.
- The main criteria for selecting measurement implements are accuracy, precision, and ease of use.
Other Key Relationships and Equivalents
- 4545 mL is approximately equivalent to 4.5 liters in UK measurements.
- One milligram (mg) is 0.001 grams (g), establishing a clear metric relationship.
- Avoirdupois pound (lb) is approximately 0.4536 kilograms (kg).
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Description
Test your knowledge of the International System of Units (SI), the internationally recognized decimal system of weights and measures. Explore its relevance to pharmaceutical research, manufacturing, and pharmacy practice.
