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WorksheetsCHEM 101 Ch 6,7,9 Review
Total questions: 29
Worksheet time: 21mins
Name Fe(CN)3
iron cyanide
iron tricyanide
iron (III) cyanide
iron (III) tricyanide
iron (I) cyanide
Name N2O5
nitrogen oxide
nitrogen (II) oxide
dinitrogen oxide
nitrogen pentoxide
dinitrogen pentoxide
What is the formula of the molecule with the name zinc chlorate?
ZnCl2
Zn(ClO3)2
Zn(ClO2)2
ZnCl
Bad qu.; name needs a (II) after "zinc"
What is the coefficient of oxygen gas after balancing the following equation? __LiNO3(s) ⟶ __LiNO2(s) + __O2(g)
(a)
How many molecules are in two moles of hexane?
1
2
6.02×1023
1.20×1024
Need more info (hexane formula)
Define molarity
Moles of solute per Liter of solution
Grams of a substance per mole
6.02 x 1023 molecules = 1 mole
Grams of solute / grams of solution x 100%
Moles of solute per mL of solvent
What do we need to find a molar ratio (aka. mole factor)?
Avogadro's number
Balanced chemical equation
Data (ex: masses, volumes, etc.)
Dental charts
Which of the following is considered evidence of a chemical reaction?
Vapors off a beaker of boiling water
Temporary color change
Something dissolving in solvent
Noticeable change in heat
Which of the following can a single N atom not do in a molecule?
Form 3 single bonds
Form 2 double bonds
Form 1 triple bond with another N atom
Form 1 single bond + 1 double bond
In ionic bonding, electrons are
Shared, not taken
Spread all around
Taken, not shared
Irrelevant
Why do dipoles exist? Check all that apply
Uneven sharing of electrons in a covalent bond
The magnetic field of the Earth
A difference in EN between atoms
The Rutherford gold foil experiment
A polar bond results in 2 partially charged poles
Where can you NOT find the molar mass of an element?
The periodic table
A chemistry textbook
A Google search
Avogadro's number
True or false: All diatomic molecules are nonpolar molecules.
True
False
Which of the following is NOT a unit of concentration?
mol/L
% (m/m)
g/mol
M
% (m/v)
Which of the following cannot be dissolved by water?
HCl
NaBr
What's the first thing you check for when given a chemical equation?
What type of reaction is it?
What molar ratios (aka. mole factors) can be made?
Is it balanced?
Did they use this on Breaking Bad?
Which of the following will completely dissociate (aka. ionize) in water?
Strong electrolyte
Weak electrolyte
Nonelectrolyte
Traffic light
Of the following bonds/attractive forces, which is the weakest?
Ionic bond
Covalent bond
Hydrogen bonding
Dipole-dipole attractions
Dispersion forces
True or false: If you can still dissolve more solute into a given solution, the solution is currently saturated.
True
False
Which of the following has an ionic bond?
HCl
ICl
IBr
None of these choices
What is the name of the only positive polyatomic ion that we have covered so far? (Type the phrase, or if you type the formula, do it without subscripts/superscripts)
(a)
Which chlorine-containing polyatomic ion has the least amount of oxygen? (All of these choices have the same charge.)
Chlorite
Chlorate
Perchlorate
Hypochlorite
Hydroxide
If I dropped some red blood cells into a beaker of 1.50% (m/v) NaCl, according to osmosis, what should I expect the cells to do?
Stay the same
Swell up
Shrivel
Blow up
If I dilute a 15.0 mL solution of 0.50 M NaCl to a concentration of 0.25 M NaCl, what is the volume of the final solution? Remember sig-figs and units.
(a)
If given 14 grams of a polar solute, dissolved in 95 grams of water, what is solution concentration expressed as a mass/mass percentage? Put % down as the unit.
(a)
In 2 moles of Fe3+, there are (a) Eq. (Just put a number in the blank.)
An IV bottle contains NaCl. If the Na+ is 28 mEq/L, the Cl− is
1 mEq/L
28 mEq/L
56 mEq/L
14 mEq/L
How many grams are in 3.45 moles of water? (For this specific question, please answer to 2 sig-figs.)
(a)
How many moles of solute are in 26 mL of a 0.124 M solution? Please write the answer in decimal form, NOT scientific notation, for this specific question.
(a)
