AP Chemistry Unit 4

What mass of SOCl₂ is produced when 16.2g SO₂ react with 13.7g PCl₅? 

• 7.87g

• 30.1g

• 26.4g

• 19.8g 

Tags

NGSS.HS-PS1-7

Quinone, which is used in the dye industry and in photography, is an organic compound containing only C, H, and O. What is the empirical formula of the compound if you find that 0.105 g of the compound gives 0.257 g of CO₂ and 0.0350 g of H₂O when burned completely?

• CHO

• C₂H₁₀

• C₆H₄O₂

• C₃H₂O

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-7

In which of the following compounds is the mass ratio of Titanium to Oxygen closest to 2.1 to 1.0?

• TiO₃

• TiO₂

• TiO

• Ti₂O₃

Tags

NGSS.HS-PS1-7

Calculate the average atomic mass from the mass spec.

• 85.56 amu

• 85.75 amu

• 86.44 amu

• 86.74

Tags

NGSS.HS-PS1-7

Based on the mass spec data, which Iron isotope is the most abundant?

• Fe-54

• Fe-56

• Fe-57

• Fe-58

The PES spectrum below is for the element _______________.

• O

• Ne

• N

• F

Tags

NGSS.HS-PS1-1

Examine the spectrum below. Where would you expect the 2p peak for F be if it were on the same spectrum?

• To the left of the peak at 3.04

• To the right of the peak at 3.04

• To the left of the peak at 1.31

• To the right of the peak at 1.31

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

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

When an electron is in a higher energy level, it is ___________ the nucleus and therefore has _______ Coulombic attraction to the nucleus and is ________ to remove (...it has a _________ 1st ionization energy.)

• closer to

  greater

  harder

  higher

• farther from

  less

  easier

  lower

• farther from

  greater

  easier

  higher

• closer to

  less

  harder

  lower

Tags

NGSS.HS-PS1-1

Moving across a row on the periodic table, the Z_eff (nuclear charge) _______, therefore the valence electrons are ________ attracted to the nucleus, therefore the atomic radius __________ and the ionization energy ____________. 

• decreases

  less

  increases

  decreases

• increases

  less

  increases

  increases

• increases

  more

  decreases

  increases

• decreases

  more

  decreases

  decreases

Tags

NGSS.HS-PS1-1