IG Chemistry-5 Chemical calculation (5.3)

Using the following equation:
Fe₂O₃(s) + 3H₂(g) → 2Fe(s) + 3H₂O(l)
How many moles of iron can be made from  6 moles H₂? 

• 4 moles Fe
• 6 moles Fe
• 9 moles Fe
• 2 moles Fe

Tags

NGSS.HS-PS1-7

2 NaClO₃ (s) --> 2NaCl (s) +3 O₂ (g)  
12.00 moles of NaClO₃ will produce how many grams of O₂?

• 256 g of O₂
• 576 g of O₂
• 288 g O₂

Tags

NGSS.HS-PS1-7

The substance being dissolved in a solution.

• sands
• solute
• solvent
• alloy

What is the mass concentration of 2.5 g of NaOH dissolved in 12.0 L of solution?

• 0.21 g/L

• 30 g/L

• 4.8 g/L

• 20.8 g/L

What is the molarity of 122.5 g of AlCl₃ in 1.0 L of solution? The molar mass of AlCl₃ is 133.33 g/mol.

• 1.225 mol/L

• 0.92 mol/L

• 0.1225 M

• A

• B

• C

• D

Tags

NGSS.HS-PS1-7

• A

• B

• C

• D

Tags

NGSS.HS-PS1-7

• A

• B

• C

• D

• A

• B

• C

• D

Tags

NGSS.HS-PS1-7

What is the long graduated piece of equipment called?

• Pipette
• Tube
• Burette
• Measuring Cylinder