ECU CHEM 1120 Exam 3 Study Guide | General Chemistry Review, Key Concepts & Practice
Questions
The molar mass of Fe(OH)3 is ________ g.
OH= 17.0073 Fe= 55.847 - correct answer ✔✔106.87
How many molecules are there in 3.00 moles of NH3?
Avogadro's # = 6.023 x 10^23 - correct answer ✔✔1.81 x 10^24
50.0g of Cl2 contains ____ mol Cl2.
1 mol Cl2 = 70.906g
50.0g/70.906g - correct answer ✔✔0.705
In the balanced reaction shown, the mole ratio of Fe2S3 to O2 is
Fe2S3 + 4O2 -> 2FeO + 3SO2 - correct answer ✔✔1 to 4
In the reaction shown, how many moles of HCl are needed to react with 2.4 moles of Al?
2Al + 6HCl -> 2AlCl3 + 3H2
2.4 x 6HCl/2Al - correct answer ✔✔7.2
A process or reaction which takes in heat from the surroundings is said to be - correct answer
✔✔endothermic
All of the statements regarding the symbol "🔺H" are correct EXCEPT - correct answer ✔✔it can
be called entropy change
Consider the reaction shown:
Questions
The molar mass of Fe(OH)3 is ________ g.
OH= 17.0073 Fe= 55.847 - correct answer ✔✔106.87
How many molecules are there in 3.00 moles of NH3?
Avogadro's # = 6.023 x 10^23 - correct answer ✔✔1.81 x 10^24
50.0g of Cl2 contains ____ mol Cl2.
1 mol Cl2 = 70.906g
50.0g/70.906g - correct answer ✔✔0.705
In the balanced reaction shown, the mole ratio of Fe2S3 to O2 is
Fe2S3 + 4O2 -> 2FeO + 3SO2 - correct answer ✔✔1 to 4
In the reaction shown, how many moles of HCl are needed to react with 2.4 moles of Al?
2Al + 6HCl -> 2AlCl3 + 3H2
2.4 x 6HCl/2Al - correct answer ✔✔7.2
A process or reaction which takes in heat from the surroundings is said to be - correct answer
✔✔endothermic
All of the statements regarding the symbol "🔺H" are correct EXCEPT - correct answer ✔✔it can
be called entropy change
Consider the reaction shown:
