Unit 2 Your Turns

What is the oxidation number of nitrogen in nitric acid, HNO3?

+5

Why isn't Al(OH)3 classified as a strong base?

Al(OH)3 is insoluble in water.

What dissolved species are present in a solution of NaClO4?

Na+ (aq) and ClO4- (aq)

Which ions, if any, are spectator ions in this reaction? AgNO3(aq) + NaCl(aq) ⟶ AgCl(s) + NaNO3(aq)

Na+(aq) and NO3-(aq)

Which solute will cause the light bulb in the figure to glow most brightly, CH3OH, NaOH, or CH3COOH?

NaOH (aq)

Our bodies are penetrated by X rays, but not by visible light. Do X rays travel faster than visible light?

No, both X rays and visible light travel at the same speed

Consider the notes that can be played on a piano. In what way is a piano an example of a quantized system?

Only certain notes exist, with none in between.

Consider the notes that can be played on a violin. Would the violin sounds be continuous or quantized?

The violin notes are continuous

If the wavelength of the incoming light is increased, will the kinetic energy of the ejected electrons (eKE) increase, decrease, or stay the same?

eKE will decease

If the frequency of the incoming light is increased, will the kinetic energy of the ejected electrons (eKE) increase, decrease, or stay the same?

eKE will increase

Classify these ionic compounds as soluble or insoluble PbSO4

insoluble

Classify these ionic compounds as soluble or insoluble Na2CO3

soluble

If wave (a) has a wavelength of 2.0 m and a frequency of 1.5×108 Hz, what are the wavelength and frequency of wave (b)?

wavelength = 1.0 m and v = 3.0×108 Hz