Mole/Empirical Formula Problems Question Preview (ID: 59239)


Reviewing Moles And How To Find Empirical Formula, Including The Formula Of Hydrates. TEACHERS: click here for quick copy question ID numbers.

The mass of 1 mole of Ba(OH)2 is
a) 154.3 g
b) 155.3 g
c) 171.3 g
d) 308.6 g

A substance has the empirical formula of CH2, with a sample measured as weighing 56 g/mol. The molecular formula is...
a) CH2
b) C4H8
c) C4H6
d) C8H4

A substance contains 65.4 g Zinc, 12.0 g Carbon, and 48 g Oxygen. What is its empirical formula?
a) Zn1C1O2
b) Zn1C4O6
c) Zn1C1O3
d) Zn5C1O4

A sample of Magnesium and chlorine is found to have the empirical formula Mg2Cl4. A sample is put through a mass spectrometer and found to weigh 190 amu. It's molecular formula is...
a) Mg2Cl4
b) MgCl2
c) Mg2Cl5
d) MgCl3

Which is the empirical formula?
a) P2O5
b) P8020
c) P6O15
d) P4O10

NH4Cl would have a molar mass of...
a) 97 g/mol
b) 53.4 g/mol
c) 53.4 amu
d) 97 amu

A substance that is 92.3% C and 7.7% H would have an empirical formula of...
a) C1H1
b) C2H2
c) C3H3
d) C4H4

A sample of anhydrous NaCl has a mass of of 29.22 g/mol. The water (H2O) that was removed had a mass of 36.05 g/mol. What was the Hydrates formula?
a) 1 NaCl * 4 H2O
b) 4 NaCl * 1 H2O
c) 6 NaCl * 1 H2o
d) 2 NaCl * 8 H2O

A solution with 200 mL of 3.00 M CuCl2 contains how many moles of CuCl2?
a) .600 moles
b) 600 moles
c) .667 moles
d) 667 moles

What is the mass of a contained filled with 88.8 L of Nitrogen molecules?
a) 111 g/mol
b) 55.5 g/mol
c) i'm bored of making up answers
d) send help

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