CHEM 1AL Quizzes Questions With Complete Solutions
Convert 0.45 cm to mm.
4.5 mm
Rank the following glassware used in lab from least accurate (1)
to most accurate (3).
Volumetric pipette
Graduated cylinder
Beaker
Volumetric pipette
3
Graduated cylinder
2
Beaker
1
Which of these bonds is formed due to the opposite charges of
cations and anions being attracted to each other?
Select one:
Hydrogen
Ionic
Oxygen
Non-polar
Covalent
,ionic
What is the name of the compound with the formula of
BF3
boron trifluoride
What is the correct formula for aluminum hypochlorite?
Select one:
Al(ClO)3
Al3ClO
Al(ClO2)3
AlClO
AlClO3
Al(ClO)3
Identify the correct name
HNO3
nitric acid
H2S
hydrosulfuric acid
H2SO4
sulfuric acid
HNO2
nitrous acid
HClO3
chloric acid
, HClO4
perchloric acid
Identify the number of valence electrons in each atom:
Ca
2
Suppose that you decompose 25.66 g of
Ni2O3, which has a molar mass of 165.39 g/mol, into nickel and
oxygen.
2Ni2O3(s)⟶4Ni(s)+3O2(g)2Ni2O3(s)⟶4Ni(s)+3O2(g)
After completing the decomposition, you have 10.34 g of solid
Ni, which has a molar mass of 58.963 g/mol.
What is the percent yield of your decomposition?
56.56%
A ............study is characterized by precise measurements and
numerical data, while a .............study is characterized by a lack
of precise numerical data.
A quantitative study is characterized by precise measurements
and numerical data, while a qualitative study is characterized by
a lack of precise numerical data.
Sugar is easily soluble in water and has a molar mass of 342.30
g/mol. What is the molar concentration of a 228.6 mL aqueous
solution prepared with 77.8 g of sugar?
Convert 0.45 cm to mm.
4.5 mm
Rank the following glassware used in lab from least accurate (1)
to most accurate (3).
Volumetric pipette
Graduated cylinder
Beaker
Volumetric pipette
3
Graduated cylinder
2
Beaker
1
Which of these bonds is formed due to the opposite charges of
cations and anions being attracted to each other?
Select one:
Hydrogen
Ionic
Oxygen
Non-polar
Covalent
,ionic
What is the name of the compound with the formula of
BF3
boron trifluoride
What is the correct formula for aluminum hypochlorite?
Select one:
Al(ClO)3
Al3ClO
Al(ClO2)3
AlClO
AlClO3
Al(ClO)3
Identify the correct name
HNO3
nitric acid
H2S
hydrosulfuric acid
H2SO4
sulfuric acid
HNO2
nitrous acid
HClO3
chloric acid
, HClO4
perchloric acid
Identify the number of valence electrons in each atom:
Ca
2
Suppose that you decompose 25.66 g of
Ni2O3, which has a molar mass of 165.39 g/mol, into nickel and
oxygen.
2Ni2O3(s)⟶4Ni(s)+3O2(g)2Ni2O3(s)⟶4Ni(s)+3O2(g)
After completing the decomposition, you have 10.34 g of solid
Ni, which has a molar mass of 58.963 g/mol.
What is the percent yield of your decomposition?
56.56%
A ............study is characterized by precise measurements and
numerical data, while a .............study is characterized by a lack
of precise numerical data.
A quantitative study is characterized by precise measurements
and numerical data, while a qualitative study is characterized by
a lack of precise numerical data.
Sugar is easily soluble in water and has a molar mass of 342.30
g/mol. What is the molar concentration of a 228.6 mL aqueous
solution prepared with 77.8 g of sugar?
