What Is the Concentration of NO₃^- Ions in a Solution

question 74

Multiple Choice

What is the concentration of NO₃^- ions in a solution prepared by dissolving 15.0 g of Ca(NO₃) ₂ in enough water to produce 300.mL of solution?

• A)0)152 M
• B)0)305 M
• C)0)403 M
• D)0)609 M

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Definitions:

Iconic Memory

A component of the visual memory system which includes a very brief (<1 second) recall of visual images.

Echoic Memory

A subsystem of sensory memory that retains auditory information for a short period after the original sound has ceased.

Selectively Noticing

The cognitive process of focusing attention on certain stimuli or information while ignoring others, often based on personal relevance or importance.

Attention

The process of selectively concentrating on one aspect of the environment while ignoring other things.