Gen Chem 1 Final Exam Review with
Complete Solution – Saylor Academy
Questions with 100% Verified Answers
Gen Chem 1 Final Exam Review with
Complete Solution – Saylor Academy
Questions with 100% Verified Answers
11.4 g of Na2SO4 dissolved in 400 mL of solution. What is the ...
Gen Chem 1 Final Exam Review with
Complete Solution – Saylor Academy
Questions with 100% Verified Answers
, Gen Chem 1 Final Exam Review with
Complete Solution – Saylor Academy
Questions with 100% Verified Answers
11.4 g of Na2SO4 dissolved in 400 mL of solution. What is the molarity of the solution?
A) 0.2 M
B) 0.5 M
C) 0.4 M
D) 0.1 M
E) 0.3 M - Answer ✓✓0.2 M
A 3.214g sample of magnesium reacts with 8.416g of bromine. The only product is
magnesium bromide. If 1.934g of magnesium is left unreacted, how much magnesium
bromide is formed?
A) 1.280 g
B) 7.136 g
C) 9.696 g
D) 3.268 g
E) 5.202 g - Answer ✓✓9.696 g
A compound has 4-% C, 6.7% H, and 53.3% O: its molar mass is equal to 120 amu.
What is the formula of the compound?
A) C4H8O4
B) C6H12O6
C) C2H4O2
D) CH2)
E) C3H6O3 - Answer ✓✓C4H8O4
A physical change
A) occurs when sugar is heated into caramel
B) occurs when iron rusts
C) occurs when water is evaporated
D) occurs when glucose is converted into energy within your cells
E) occurs when propane is burned for heat - Answer ✓✓occurs when water is
evaporated
A sample of copper absorbs 43.6 kJ of heat, resulting in a temperature rise of 50.0°C,
determine the mass (in kg) of the copper sample if the specific heat capacity of copper
is 0.385 J/g°C.
A) 6.64 kg
B) 11.9 kg
C) 5.10 kg
D) 2.26 kg
, E) 0.235 kg - Answer ✓✓2.26 kg
A system absorbs 623 J of heat while doing 457 J of work. What is the value of internal
energy change, ΔE?
A) -166 J
B) -1080 J
C) +1080 J
D) +166 J
E) +623 J - Answer ✓✓+166 J
Aluminum reacts with a certain nonmetallic element to form a compound with the
general formula Al2X3. Element X must be from group ______ of the periodic table of
elements.
A) 4A
B) 5A
C) 3A
D) 6A
E) 7A - Answer ✓✓6A
An 56 Fe 2+ particle contains
A) 28 protons, 28 neutrons, 26 electrons
B) 54 protons, 56 neutrons, 52 electrons
C) 58 protons, 58 neutrons, 56 electrons
D) 26 protons, 26 neutrons, 26 electrons
E) 26 protons, 30 neutrons, 24 electrons - Answer ✓✓26 protons, 30 neutrons, 24
electrons
An x-ray has a wavelength of 1.2 A (1 A = 10-10 m). Calculate the energy, in J, of one
photon of this x-ray radiation.
A) 1.7x10^-15 J
B) 1.2 J
C) 1.7x10^-20 J
D) 1.2x10^-20 J
E) 1.7x10^-5 J - Answer ✓✓1.7x10^-15 J
Balance the equation: C2H6 + O2 = CO2 + H2)
What are the coefficients for O2 and CO2?
A) 7O2, 4CO2
B) 7O2, 12CO2
C) 3O2, 2CO2
D) 6O2, 4CO2 - Answer ✓✓7O2, 4CO2
Based on the VSEPR theory, which should have the smallest XAX bond angle?
**look at exam 4 because I aint paying to add images - Answer ✓✓**look at exam 4
because I aint paying to add images
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