AP Chemistry Unit 6

The mass, in grams, of 1.35 x 10^26 molecules of water is equal to

Chloroform, a toxic substance that may cause severe liver, kidney, and heart damage, has the percent composition by mass of this compound is 10.06% carbon, 0.84% hydrogen, and 89.09% chlorine. What is the empirical formula of this compound?

• C₃H₃Cl

• CH₆Cl₃

• CH₃Cl₃ 

• CHCl₃

Tags

NGSS.HS-PS1-7

• 114.78 mol PbI₂

• 0.904 grams PbI₂

• 0.904 mol PbI₂

• 114.78 grams PbI₂

Tags

NGSS.HS-PS1-7

• 408 g KClO₃

• 804 g KClO₃

• 598 g KClO₃

• There is not enough information.

Which electron configuration belongs to a Chloride (Cl^-) ion?

• 1s² 2s² 2p⁶ 3s² 3p⁵

• 1s² 2s² 2p⁶ 3s² 3p⁶

• 1s² 2s² 2p⁶ 3s² 3p⁷

• 1s² 2s² 2p⁶ 3p⁷

Tags

NGSS.HS-PS1-1

The graph shows the successive ionization energies of an unknown element. In which group would you expect to find this element?

• 7

• 6

• 16

• 17

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Using the table, how many valence electrons does unknown element P have? ***P IS NOT PHOSPHORUS IN THIS CASE!***

• 5

• 2

• 3

• 4

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What would the charge of Q be if it were to become an ion?

• 3-

• 3+

• 5-

• 5+

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Calculate the number of sulfate ions in 100.0 grams of Aluminum Sulfate.

• 3.519 x 10^23 sulfate ions

• 2.639 x 10^23 sulfate ions

• 6.121 x 10^24 sulfate ions

• 2.057 x 10^24 sulfate ions

When reading a PES graph, the higher the peak, _______________

• the more energy the electrons contain

• the more electrons are in that sublevel

• the further the electrons are from the nucleus

• the higher the first ionization energy