Chem Unit 11-A

In a reaction A + B ----> C,  reactant A has 5g and product  C has 9g. How many grams does reactant B should have? 

• 4g
• 5g
• 9g
• 14g

What is the part of the chemical equation in green called?

Fe + S → FeS

• products

• reactants

• yield

• input

What is the PE of the reactants?

• 40 kJ
• 20 kJ
• 100 kJ
• 60 kJ

What is the activation energy?

• 40 kJ
• 20 kJ
• 100 kJ
• 60 kJ

Is the reaction endothermic or exothermic?

• Endothermic
• Exothermic
• Caroussothermic
• Nonthermic

What is the PE of the reactants?

• 40 kJ
• 20 kJ
• 100 kJ
• 60 kJ

What is the PE of the products?

• 40 kJ
• 20 kJ
• 100 kJ
• 60 kJ

What is the activation energy?

• 40 kJ
• 20 kJ
• 100 kJ
• 60 kJ

What is the PE of the activated complex?

• 40 kJ
• 20 kJ
• 100 kJ
• 60 kJ

What is the change of the heat of the reaction (ΔH)?

• -80 kJ

• 20 kJ
• 100 kJ
• -60 kJ

• -20 kJ