Molarity, Precipitates and Reactivity Series

Suppose you dissolve 0.435 g of KMnO₄ in enough water to give 250. mL of solution. What is the concentration (M)?

• 0.0110 M

• 0.002753 M

• 158 M

• 1.74 M

• 0.0000112

If 0.10 mol of Copper (II) chloride is dissolved in enough water to make 2.0 L of solution, what is the Molarity and the number of grams of Copper (II) chloride dissolved in the solution?

• 0.05 M, 13.45 g

• 0.2 M, 1625 g

• 0.05 M, 9.9 g

• 0.2 M, 13.45 g

What is the concentration of Sodium Carbonate when 25.3 g is dissolved to produce a 250. mL solution?

• 0.955 M

• 0.239 M

• 1.91 M

• 1.22 M

If ammonium carbonate is reacted with copper (II) nitrate, which of the following would be the correct net ionic equation? (Carbonates are not very soluble)

• 2NH₄⁺ (aq) + CO₃^2- (aq) --> (NH₄)₂CO₃ (s)

• 2NH₄⁺ (aq) + 2NO₃^- (aq) --> 2NH₄NO₃ (s)

• CO₃^2- (aq) + Cu²⁺ (aq) --> CuCO₃ (s)

• Cu²⁺ (aq) + 2NO₃^- --> Cu(NO₃)₂ (s)

If ammonium carbonate is reacted with copper (II) nitrate, which of the following would be the correct spectator ions (Carbonates are not very soluble)

• ammonium and carbonate

• ammonium and copper

• copper and nitrate

• ammonium and nitrate

• copper and carbonate

What would be the mass of 1.5mol H₂O

• 20
• 27
• 32
• 40

What is the mass of 0.75 moles of (NH₄)₃PO₄?

• 101.75 g
• 121.75 g
• 111.75 g
• 131.75 g

Tags

NGSS.HS-PS1-7

How many grams of solute are dissolved in 125.0 mL of 5.00 M NaCl (MM = 58.45)?

• 0.625 g NaCl
• 625 g NaCl
• 36.5 g NaCl
• 0.04 mol NaCl

Tags

NGSS.HS-PS1-7

What is the molarity of 4 g of NaCl (MM=58.45) in 3,800 mL of solution?

• 0.018 M
• 0.0011 M
• 1.052 M
• 0.062 M

NH₄NO₃

• soluble
• insoluble