QUIZ Industrial Chemistry

Determine the weight of 0.25 moles of aluminum ?

• 6.75 g

• 5.75 g

• 4.75 g

• 7.75 g

Determine the moles of 563 g CaCO3

• 5.53 moles

• 4.63 moles

• 5.63 moles

• 5.43 moles

Stoichiometry is the:

• calculation of amounts of substances in a chemical reaction from the balanced equation

• calculation of the mass of substances in a chemical reaction from the chemical equation

• calculation of the number of particles in a physical reaction from the balanced equation

• bane of my existence

Four students tried to balance the following Reaction:

Mg + Fe₂O₃ → MgO + Fe

Which student is correct?

• 3Mg + Fe₂O₃ → 3MgO + 2Fe

• Mg + Fe₂O₃ → MgO₃+ Fe₂

• 2Mg + Fe₂O₂ → 2MgO + 2Fe

• 3Mg + 2Fe₂O₃ → 3MgO + 2Fe

How many moles are in 16.94g of water?

• 16.94 mol H₂O

• 0.9401 mol H₂O

• 305.3 mol H₂O

• 1.063 mol H₂O

N₂ +  3H₂ → 2NH₃ 
How many moles of hydrogen are needed to react with 2 moles of nitrogen?

• 6
• 2
• 3
• 1

Balance the following reaction :
 
CaC₂(s)   +   H₂O(l)   -->   C₂H₂(g)   +   Ca(OH)₂(aq)

• 1,2,2,2
• 1,2,1,1
• 2,1,1,1
• 2,1,2,1

P₄ + 3O₂ --> P₄O₆ 
What is the limiting reactant is 12 moles of P₄ react with 15 moles of O₂?

• P₄
• O₂
• P₄O₆ 
• none of the above

The limiting reactant

• slows the reaction down
• is used up first
• is the reactant that is left over
• controls the speed of the reaction

For the reaction represented by the equation Cl₂ + 2KBr → Br₂ + 2KCl, how many grams of potassium chloride can be produced from 356 grams potassium bromide?

• 749 g
• 225 g
• 479 g
• 814 g

Tags

NGSS.HS-PS1-7