Question 1

Which of the following is the correct chemical formula for Copper(I) Phosphide?

Accepted Answer

$$\mathrm{Cu_3P}$$

Question 2

Which of the following best describes the molecular geometry and polarity of $$\mathrm{$$BrCl_3$$}$$?

Accepted Answer

T-shaped, polar

Question 3

Given the formula $$\mathrm{$$PbS_2$$}$$, what is the correct name for this compound?

Accepted Answer

Lead(IV) Disulfide

Question 4

Which of the following statements is 	extit{false} concerning blackbody radiation?

Accepted Answer

The frequency distribution can be explained by treating the solid as a collection of oscillating particles where all frequencies are absorbed.

Question 5

A sound wave in air at $$20\ ^\circ\mathrm{C}$$ has a speed of $$343.5\ \mathrm{m\ s$$^{-1}$$}. If $$the frequency of the sound from the note D below middle C is $$146.8\ \mathrm{Hz}$$, what is the wavelength of the sound?

Accepted Answer

$$2.34\ \mathrm{m}$$

Question 6

Which of the following compounds is correctly named?

Accepted Answer

$$\mathrm{$$HBrO_3$$}$$: Bromic Acid

Question 7

What is the molecular geometry of $$\mathrm{$$AlF_5$$}$$ and is it polar or nonpolar?

Accepted Answer

Trigonal bipyramidal, nonpolar

Question 8

Which of the following best describes the geometry and polarity of $$\mathrm{$$BeI_2$$}$$?

Accepted Answer

Linear, nonpolar

Question 9

Which of the following statements about the speed of sound in air is correct?

Accepted Answer

The speed of sound increases as the temperature of air increases.

Question 10

A concert hall is 44.7 m long. If a sound wave of frequency $$146.8\ \mathrm{Hz}$$ travels from the stage to the back wall at $$343.5\ \mathrm{m\ s$$^{-1}$$}$$, how long does it take to reach the back wall?

Accepted Answer

$$0.130\ \mathrm{s}$$

Question 11

Which of the following is the correct formula for Lead(II) Chlorate?

Accepted Answer

$$\mathrm{Pb($$ClO_3$$)_2}$$

Question 12

Which of the following best explains why $$\mathrm{$$BrCl_3$$} is $$polar?

Accepted Answer

It has a T-shaped geometry with lone pairs on the central atom, resulting in an uneven distribution of charge.

Question 13

Which of the following statements about Planck's hypothesis is correct?

Accepted Answer

Energy is quantized and can only be emitted or absorbed in discrete amounts called quanta.

Question 14

Which of the following is the correct name for $$\mathrm{Co($$BrO_3$$)_2}$$?

Accepted Answer

Cobalt(II) Bromate

Question 15

Which of the following best describes the 'ultraviolet catastrophe'?

Accepted Answer

The failure of classical physics to predict the observed intensity of blackbody radiation at short wavelengths.

Extra Credit Quiz 1 (Chem)

Guida di studio - Domande di pratica

Study guide - Flashcard