CHEM 1305 Exam 3 TTU Newest 2026
Questions and Correct Detailed Answers
Already Graded A+
What are the number of moles of NaCl produced if you start with 3 moles of Cl2
according to the following balanced reaction?
2Na + Cl2 → 2NaCl - CORRECT ANSWER-d) 6 moles
Which of the following has the most atoms? - CORRECT ANSWER-e) 17 g of
ammonia, NH3
After balancing the following equation, what is the coefficient in front of the
H2O? __NaOH + __H3PO4 → __Na3PO4 + __H2O - CORRECT ANSWER-c) 3
A sample of the air we are breathing contains 78% N2, 21% O2, 0.93% Argon and
0.04% CO2. Which is the solvent? - CORRECT ANSWER-b) N2
How many covalent bonds are usually formed between the atom N and C? -
CORRECT ANSWER-c) 3
What is the molecular weight of Mg(OH)2? - CORRECT ANSWER-a) 58 amu
, Group 1 atoms form ____ bonds with group 17 atoms, while group 14 atoms form
____ bonds with group 16 atoms. - CORRECT ANSWER-b) ionic, covalent
200g of which of following would have the greatest number of atoms? -
CORRECT ANSWER-a) B
In the reaction of 2H2 + O2 → 2H2O, the bond energy of H-H is 436 KJ/Mole, O=O
is 498 KJ/Mole, H-O is 464 KJ/Mole. According to the bond energy, this reaction is
- CORRECT ANSWER-b) exothermic
If you make an ionic compound between aluminum and sulfur, what is the ratio of
aluminum to sulfur? - CORRECT ANSWER-d) 2:3
Which of the following molecules has a bent shape? - CORRECT ANSWER-b)
SeCl2
Which of the following elements would be the most electronegative? -
CORRECT ANSWER-a) Cl
The electron geometry of NH3 is - CORRECT ANSWER-c) tetrahedral
Questions and Correct Detailed Answers
Already Graded A+
What are the number of moles of NaCl produced if you start with 3 moles of Cl2
according to the following balanced reaction?
2Na + Cl2 → 2NaCl - CORRECT ANSWER-d) 6 moles
Which of the following has the most atoms? - CORRECT ANSWER-e) 17 g of
ammonia, NH3
After balancing the following equation, what is the coefficient in front of the
H2O? __NaOH + __H3PO4 → __Na3PO4 + __H2O - CORRECT ANSWER-c) 3
A sample of the air we are breathing contains 78% N2, 21% O2, 0.93% Argon and
0.04% CO2. Which is the solvent? - CORRECT ANSWER-b) N2
How many covalent bonds are usually formed between the atom N and C? -
CORRECT ANSWER-c) 3
What is the molecular weight of Mg(OH)2? - CORRECT ANSWER-a) 58 amu
, Group 1 atoms form ____ bonds with group 17 atoms, while group 14 atoms form
____ bonds with group 16 atoms. - CORRECT ANSWER-b) ionic, covalent
200g of which of following would have the greatest number of atoms? -
CORRECT ANSWER-a) B
In the reaction of 2H2 + O2 → 2H2O, the bond energy of H-H is 436 KJ/Mole, O=O
is 498 KJ/Mole, H-O is 464 KJ/Mole. According to the bond energy, this reaction is
- CORRECT ANSWER-b) exothermic
If you make an ionic compound between aluminum and sulfur, what is the ratio of
aluminum to sulfur? - CORRECT ANSWER-d) 2:3
Which of the following molecules has a bent shape? - CORRECT ANSWER-b)
SeCl2
Which of the following elements would be the most electronegative? -
CORRECT ANSWER-a) Cl
The electron geometry of NH3 is - CORRECT ANSWER-c) tetrahedral
