A 505 G Sample of Quartz (SiO₂)contains 2

question 103

Multiple Choice

A 5.05 g sample of quartz (SiO₂) contains 2.36 g of silicon. What are the percentages of silicon and oxygen in quartz?

• A)53.3% Si and 46.7% O
• B)46.7% Si and 53.3% O
• C)29.9% Si and 70.1% O
• D)70.1% Si and 29.9% O
• E)46.7% Si, and insufficient information to calculate % O

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Definitions:

Osmotic Pressure

The pressure required to prevent the flow of a solvent into a solution through a semipermeable membrane.

Plasma Proteins

Proteins found in plasma, the liquid component of blood, serving various functions including clotting, defense against pathogens, and transport of substances.

Body Temperature

The capacity of the body to produce and eliminate heat, essential for sustaining metabolic activities.

Erythrocytes

Red blood cells that are responsible for carrying oxygen from the lungs to the body's tissues and returning carbon dioxide from the tissues back to the lungs.