CHEM 101 Final Ivy Tech 2025-2026 most recent version Comprehensive 140 questions and verified answers accurate solutions Already graded A+ Get it 100% correct
"When filling orbitals of equal energy, electrons fill them singly first with parallel spins" This is known as: - CORRECT ANSWER: Hund's rule
A 250 gram sample of water at the boiling point had 45.0 kJ of heat added. How many grams of water were vaporized? Heat of vaporization for water is 40.6 kJ/mole. -
CORRECT ANSWER: 20.0
A lead ball has a mass of 55.0 grams and a density of 11.4 g/cm3. What is the volume
of the ball? - CORRECT ANSWER: 4.82 mL
A plastic block has dimensions of 2.2 cm x 3.0 cm x 1.5 cm and a mass of 12.4 grams.Will the block float in water and why? - CORRECT ANSWER: No, because the density of the block is 1.3 g/mL which is greater than the density of water.
A solution is an example of a (an): - CORRECT ANSWER: homogeneous mixture
All of the following can be considered physical properties EXCEPT: - CORRECT
ANSWER: flammability
All of the following compounds are soluble in water EXCEPT: - CORRECT ANSWER: PbCl2
An atom containing 7 protons, 8 neutrons, and 7 electrons: - CORRECT ANSWER: is charge-neutral. 1 / 2
Before a chemical equation can be written, one must know: - CORRECT ANSWER: The symbols and formulas of all reactants and products.
Calculate the molar mass of ammonium carbonate, (NH4)2CO3. - CORRECT
ANSWER: 96.09 g/mol
Carbon is considered which of the following? - CORRECT ANSWER: atomic element
Choose the answer that best completes the following statement: When an aluminum
atom reacts so as to attain a noble gas electron configuration, - CORRECT ANSWER: the result is a configuration of 1s22s22p6
Choose the pair of names and formulas that do NOT match. - CORRECT ANSWER: all
of these are correct
Consider the electron configuration of the ion to determine which ion shown below has
an incorrect ionic charge? - CORRECT ANSWER: Al3-
Determine the answer to the following equation with correct number of significant
figures:
2.02+8.102-0.0297= - CORRECT ANSWER: 10.09
Given that 4 NH3+ 5O2 ⟶ 4 NO + 6 H2O, if 3.00 mol NH3 were made to react with excess of oxygen gas, the amount of H2O formed would be: - CORRECT ANSWER: 4.50 mol.
Given the density of Au is 19.3 g/cm3, determine the mass of gold (in grams) in an ingot with the dimensions of 10.0 in x 4.00 in x 3.00 in. - CORRECT ANSWER: 3.80 x 104
- / 2