CHEM 1411 COMPREHENSIVE EXAM REVIEW -
VERIFIED Q&A - MOST RECENT VERSION 2026
What is the correct value when rounding 2.348615 to five significant digits?
ANSWER 2.3486
Which SI unit is used for mass? ANSWER Kilogram
Is 17.5 L equal to 1000 milliliters? ANSWER 17.5 L(1000)=17500
Which atomic symbol is appropriate for mercury? ANSWER Hg
Dalton's Atomic Theory does not include which of these? - REPLY The nucleus
is a tiny core that contains the majority of an atom's mass and all of its positive
charge.
How did Rutherford's gold foil experiment turn out? - REPLY The majority of
the Alpha particles went straight through the foil.
Isotopes: What Are They? ANSWER : Atoms of the same element with
varying neutron counts.
unit of measurement for atomic mass? The Atomic Mass Unit (amu) is the
ANSWER .
On the periodic table, where are the metalloids located? ANSWER diagonal
zigzag line
Halogens are found where on the periodic table? ANSWER group 17,
beginning with the letter F
Where on the periodic table are noble gases found? ANSWER Group 18,
beginning with the element Helium
Where can I find Alkiline Earth Metals? ANSWER Group 2: Beryllium is the
first
, Alkali metals are found where? - Group 1 ANSWER : Getting Started with
Lithium
What is the proper formula for the polyatomic ion chlorate? ANSWER ClO3
From the oxyanion SO3^2-, a particular oxyacid is produced. The oxyacid's
formula is ANSWER H2SO3.
Calcium chloride hexahydrate's chemical formula is ANSWER CaCl2.6H2O.
What is the N3-ion's proper name? In response, nitride ion
What is a compound's empirical formula? The most basic atom-to-compound
ratio
Ammonium compounds and Group I are ANSWER Solutable.
What are chlorates, acetates, and nitrates? ANSWER Solvable
What are halogens with metals other than F? Solvable, with the exception of
Ag, Hg(I), and Pb
Except for?, all sulfates are soluble. ANSWER : Mercury, lead, calcium,
strontium, barium, and silver.
ANSWER CO2 and SO2 are the substances that share the same empirical
formula.
In a 22.5g sample, how many nitrogen monoxide molecules are there?
ANSWER 4.52x10^23
What gas is created when ammonium and hydrochloric acid react? ANSWER :
Carbon dioxide
With 1.4 moles of Ca(OH)2 and 2.6 moles of HCl, what is the limiting reactant
for the subsequent reaction? - ANSWER HCl
NH4+(aq)+H2O9aq)=NH3(aq)+H3O+(aq) - ANSWER H2O is a base and
H3O+ is its conjugate acid in the reaction that follows.
ANSWER +6 is the oxidation state of Cr in Cr2O7^2.
Oxidation number of Group 1 metals: ANSWER +1
VERIFIED Q&A - MOST RECENT VERSION 2026
What is the correct value when rounding 2.348615 to five significant digits?
ANSWER 2.3486
Which SI unit is used for mass? ANSWER Kilogram
Is 17.5 L equal to 1000 milliliters? ANSWER 17.5 L(1000)=17500
Which atomic symbol is appropriate for mercury? ANSWER Hg
Dalton's Atomic Theory does not include which of these? - REPLY The nucleus
is a tiny core that contains the majority of an atom's mass and all of its positive
charge.
How did Rutherford's gold foil experiment turn out? - REPLY The majority of
the Alpha particles went straight through the foil.
Isotopes: What Are They? ANSWER : Atoms of the same element with
varying neutron counts.
unit of measurement for atomic mass? The Atomic Mass Unit (amu) is the
ANSWER .
On the periodic table, where are the metalloids located? ANSWER diagonal
zigzag line
Halogens are found where on the periodic table? ANSWER group 17,
beginning with the letter F
Where on the periodic table are noble gases found? ANSWER Group 18,
beginning with the element Helium
Where can I find Alkiline Earth Metals? ANSWER Group 2: Beryllium is the
first
, Alkali metals are found where? - Group 1 ANSWER : Getting Started with
Lithium
What is the proper formula for the polyatomic ion chlorate? ANSWER ClO3
From the oxyanion SO3^2-, a particular oxyacid is produced. The oxyacid's
formula is ANSWER H2SO3.
Calcium chloride hexahydrate's chemical formula is ANSWER CaCl2.6H2O.
What is the N3-ion's proper name? In response, nitride ion
What is a compound's empirical formula? The most basic atom-to-compound
ratio
Ammonium compounds and Group I are ANSWER Solutable.
What are chlorates, acetates, and nitrates? ANSWER Solvable
What are halogens with metals other than F? Solvable, with the exception of
Ag, Hg(I), and Pb
Except for?, all sulfates are soluble. ANSWER : Mercury, lead, calcium,
strontium, barium, and silver.
ANSWER CO2 and SO2 are the substances that share the same empirical
formula.
In a 22.5g sample, how many nitrogen monoxide molecules are there?
ANSWER 4.52x10^23
What gas is created when ammonium and hydrochloric acid react? ANSWER :
Carbon dioxide
With 1.4 moles of Ca(OH)2 and 2.6 moles of HCl, what is the limiting reactant
for the subsequent reaction? - ANSWER HCl
NH4+(aq)+H2O9aq)=NH3(aq)+H3O+(aq) - ANSWER H2O is a base and
H3O+ is its conjugate acid in the reaction that follows.
ANSWER +6 is the oxidation state of Cr in Cr2O7^2.
Oxidation number of Group 1 metals: ANSWER +1
