Chem 121 Final Exam: 100% Expert Verified Study Guide
Real Testing 2026|2027 Questions Detailed Answers and
Instructor Note for A+ Guaranteed Pass
An object measuring 20.0 inches will have a length of ________ centimeters. - Answers -50.8
What is the volume (in cm^3) of a 63.4 g piece of metal with a density of 12.86 g/cm^3? -
Answers -4.93
45 m/s = ________ km/hr - Answers -1.6 × 10^2
9.673 lbs = ________ grams. - Answers -4390
The distance from the Earth to the Moon is approximately 240,000 miles. If a rocket travels at a
speed of 7.50 km/sec, it will take ________ days to travel between the Earth and Moon. -
Answers -.60
What is the charge on the particles that form the beam? - Answers -+2
Will they be attracted to or repelled from the positively charged gold nuclei? - Answers -repelled
1|Page
,number of protons and neutrons in phosphorus-32 - Answers -15 p+, 17 n
number of protons and neutrons in chromium-51 - Answers -24 p+, 27 n
number of protons and neutrons in cobalt-60 - Answers -27 p+, 33 n
number of protons and neutrons in technetium-99 - Answers -43 p+, 56 n
number of protons and neutrons in iodine-131 - Answers -58 p+, 78 n
number of protons and neutrons in thallium-201 - Answers -81 p+, 120 n
Name two ways in which the metals shown above differ in general appearance from the
nonmetals. - Answers -1) metals are usually solid when in room temperature
2) metals have a lustrous or shiny look
Cr^3+ and Br− - Answers -CrBr3
2|Page
, Fe^3+ and O^2− - Answers -Fe2O3
Hg2^2+ and CO3^2− - Answers -Hg2CO3
Ca^2+ and ClO3^1− - Answers -Ca(ClO3)2
NH4^1+ and PO4^3− - Answers -(NH4)3PO4
saltpeter, KNO3. Name? - Answers -potassium nitrate
soda ash, Na2CO3. Name? - Answers -sodium carbonate
lime, CaO. Name? - Answers -calcium oxide
muriatic acid, HCl. Name? - Answers -hydrochloric acid
3|Page
Real Testing 2026|2027 Questions Detailed Answers and
Instructor Note for A+ Guaranteed Pass
An object measuring 20.0 inches will have a length of ________ centimeters. - Answers -50.8
What is the volume (in cm^3) of a 63.4 g piece of metal with a density of 12.86 g/cm^3? -
Answers -4.93
45 m/s = ________ km/hr - Answers -1.6 × 10^2
9.673 lbs = ________ grams. - Answers -4390
The distance from the Earth to the Moon is approximately 240,000 miles. If a rocket travels at a
speed of 7.50 km/sec, it will take ________ days to travel between the Earth and Moon. -
Answers -.60
What is the charge on the particles that form the beam? - Answers -+2
Will they be attracted to or repelled from the positively charged gold nuclei? - Answers -repelled
1|Page
,number of protons and neutrons in phosphorus-32 - Answers -15 p+, 17 n
number of protons and neutrons in chromium-51 - Answers -24 p+, 27 n
number of protons and neutrons in cobalt-60 - Answers -27 p+, 33 n
number of protons and neutrons in technetium-99 - Answers -43 p+, 56 n
number of protons and neutrons in iodine-131 - Answers -58 p+, 78 n
number of protons and neutrons in thallium-201 - Answers -81 p+, 120 n
Name two ways in which the metals shown above differ in general appearance from the
nonmetals. - Answers -1) metals are usually solid when in room temperature
2) metals have a lustrous or shiny look
Cr^3+ and Br− - Answers -CrBr3
2|Page
, Fe^3+ and O^2− - Answers -Fe2O3
Hg2^2+ and CO3^2− - Answers -Hg2CO3
Ca^2+ and ClO3^1− - Answers -Ca(ClO3)2
NH4^1+ and PO4^3− - Answers -(NH4)3PO4
saltpeter, KNO3. Name? - Answers -potassium nitrate
soda ash, Na2CO3. Name? - Answers -sodium carbonate
lime, CaO. Name? - Answers -calcium oxide
muriatic acid, HCl. Name? - Answers -hydrochloric acid
3|Page
