CHM 101 Exam 1- Donovan NEWEST 2026-2027
ACTUAL EXAM COMPLETE 275 QUESTIONS
AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) ALREADY GRADED A+
BRAND NEW!!
______ have low heat capacities. - CORRECT ANSWER: metals
____________ is the amount of heat a substance must adsorb to raise its temperature 1 degree
Celsius. - CORRECT ANSWER: heat capacity
_____________ is a physical property that describes a substances ability to be drawn or pulled
into wires. - CORRECT ANSWER: Ductility
A compound containing phosphorous and oxygen has a molar mass of 219.9 g/mol and an
empirical formula of P2O3. . Determine its molecular formula. - CORRECT ANSWER: P4O6
A woman wants to determine if her engagement ring is platinum. She places the ring on a
balance and finds it has a mass of 5.84 grams. She then finds that the ring displaces 0.556 cm^3
of water. Is the ring made of platinum? (Density Pt = 21.4 g/cm^3) - CORRECT ANSWER: No
Acetylene, a gas in welding torches, has the empirical formula CH and a molar mass of 26.04
g/mol. What is its molecular formula? - CORRECT ANSWER: C2H2
An ________ has a negligible mass. - CORRECT ANSWER: electron
Choose the correct answer. What is the standard notation for 7.4 x 10^-5? - CORRECT
ANSWER: 0.000074
,Convert .067 microliters to liters. Do not include units in your answer. - CORRECT ANSWER:
6.7e-08
Convert 3.50 inches to centimeters using the following conversion factor: 2.54 cm = 1 inch. Use
correct sig figs. - CORRECT ANSWER: 8.89
Convert 3.59 kg into g. Do not include units in your answer. - CORRECT ANSWER: 3590
Convert 5 degrees Celsius to Kelvins. Express your answer as a number only. - CORRECT
ANSWER: 278.0
Convert 5.45 micrograms to femtograms. Do not include units in your answer and do not use
scientific notation. - CORRECT ANSWER: 5450000000.0
Convert 7.8 km to miles. Use the following conversion factor: 1km= 0.6214 miles Use correct
sig figs and units in your answer. - CORRECT ANSWER: 4.8
Convert 35 centigrams to grams. Do not include units in your answer. - CORRECT ANSWER:
0.35
Convert 62 picometers to millimeters. Do not use units or scientific notation in your answer. -
CORRECT ANSWER: 6.2e-8
Convert 100 degrees Fahrenheit to Celsius. Use two sig figs in your answer. Express your answer
as a number only. - CORRECT ANSWER: 38.0
Convert from 2000.4 mm to km. Do not include units in your answer. - CORRECT ANSWER:
.0020004
Find the mass in 2.6 mol of lithium bromide. - CORRECT ANSWER: 226
, Find the mass, in grams, of 1.00x100^23 molecules of N2? - CORRECT ANSWER: 4.65
Find the number of moles of argon in 452 g of argon. - CORRECT ANSWER: 11.3
How did Rutherford prove something was empty? - CORRECT ANSWER: He shot alpha
particles at a piece of gold foil.
How did Rutherford's experiment show that there was a dense particle in the center of the atom
that had small volume and high mass? - CORRECT ANSWER: Because some of the alpha
particles bounced straight back.
How is percent composition related to determining empirical formulas?
A) Need this an conversion factor
B) Problem often starts with percents
C) Both answers
D) Neither answer - CORRECT ANSWER: C
How many atoms are in 0.750 moles of zinc? - CORRECT ANSWER: 4.52x10^23
How many electrons does a Calcium ion with a charge of +2 have? - CORRECT ANSWER: 18.0
How many electrons does a neutral atom of Lithium have? - CORRECT ANSWER: 3.0
How many molecules are in 0.400 moles of N2O5? - CORRECT ANSWER: 2.41x10^23
How many moles are 1.20x10^25 atoms of phosphorous? - CORRECT ANSWER: 19.9
ACTUAL EXAM COMPLETE 275 QUESTIONS
AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) ALREADY GRADED A+
BRAND NEW!!
______ have low heat capacities. - CORRECT ANSWER: metals
____________ is the amount of heat a substance must adsorb to raise its temperature 1 degree
Celsius. - CORRECT ANSWER: heat capacity
_____________ is a physical property that describes a substances ability to be drawn or pulled
into wires. - CORRECT ANSWER: Ductility
A compound containing phosphorous and oxygen has a molar mass of 219.9 g/mol and an
empirical formula of P2O3. . Determine its molecular formula. - CORRECT ANSWER: P4O6
A woman wants to determine if her engagement ring is platinum. She places the ring on a
balance and finds it has a mass of 5.84 grams. She then finds that the ring displaces 0.556 cm^3
of water. Is the ring made of platinum? (Density Pt = 21.4 g/cm^3) - CORRECT ANSWER: No
Acetylene, a gas in welding torches, has the empirical formula CH and a molar mass of 26.04
g/mol. What is its molecular formula? - CORRECT ANSWER: C2H2
An ________ has a negligible mass. - CORRECT ANSWER: electron
Choose the correct answer. What is the standard notation for 7.4 x 10^-5? - CORRECT
ANSWER: 0.000074
,Convert .067 microliters to liters. Do not include units in your answer. - CORRECT ANSWER:
6.7e-08
Convert 3.50 inches to centimeters using the following conversion factor: 2.54 cm = 1 inch. Use
correct sig figs. - CORRECT ANSWER: 8.89
Convert 3.59 kg into g. Do not include units in your answer. - CORRECT ANSWER: 3590
Convert 5 degrees Celsius to Kelvins. Express your answer as a number only. - CORRECT
ANSWER: 278.0
Convert 5.45 micrograms to femtograms. Do not include units in your answer and do not use
scientific notation. - CORRECT ANSWER: 5450000000.0
Convert 7.8 km to miles. Use the following conversion factor: 1km= 0.6214 miles Use correct
sig figs and units in your answer. - CORRECT ANSWER: 4.8
Convert 35 centigrams to grams. Do not include units in your answer. - CORRECT ANSWER:
0.35
Convert 62 picometers to millimeters. Do not use units or scientific notation in your answer. -
CORRECT ANSWER: 6.2e-8
Convert 100 degrees Fahrenheit to Celsius. Use two sig figs in your answer. Express your answer
as a number only. - CORRECT ANSWER: 38.0
Convert from 2000.4 mm to km. Do not include units in your answer. - CORRECT ANSWER:
.0020004
Find the mass in 2.6 mol of lithium bromide. - CORRECT ANSWER: 226
, Find the mass, in grams, of 1.00x100^23 molecules of N2? - CORRECT ANSWER: 4.65
Find the number of moles of argon in 452 g of argon. - CORRECT ANSWER: 11.3
How did Rutherford prove something was empty? - CORRECT ANSWER: He shot alpha
particles at a piece of gold foil.
How did Rutherford's experiment show that there was a dense particle in the center of the atom
that had small volume and high mass? - CORRECT ANSWER: Because some of the alpha
particles bounced straight back.
How is percent composition related to determining empirical formulas?
A) Need this an conversion factor
B) Problem often starts with percents
C) Both answers
D) Neither answer - CORRECT ANSWER: C
How many atoms are in 0.750 moles of zinc? - CORRECT ANSWER: 4.52x10^23
How many electrons does a Calcium ion with a charge of +2 have? - CORRECT ANSWER: 18.0
How many electrons does a neutral atom of Lithium have? - CORRECT ANSWER: 3.0
How many molecules are in 0.400 moles of N2O5? - CORRECT ANSWER: 2.41x10^23
How many moles are 1.20x10^25 atoms of phosphorous? - CORRECT ANSWER: 19.9
