Solutions-molarity and acids/bases

What is the molarity of a solution with .31 moles of NaCl and 2.8L of water?

• .43M

• .11M

• .87M

• 9.1M

If I have a .93M solution that is 20.0L but then dilute it to 100.0 L, what is the ending molarity?

• .57M

• .215M

• 4.65M

• .186M

Which solution has a LOWER molarity?

• Solution 1

• Solution 2

• They have the same

• Neither

Tags

NGSS.HS-PS1-5

In order to dilute a solution, you need to

• add more of the solid

• add more water

• find the mass

• find the volume

When a Koolaid mix in water is dark in color and very sweet it is a __________ solution.

• concentrated 
• Diluted

Tags

NGSS.HS-PS1-5

acids taste

• bitter

• sour

• furry

What is the acid in the following equation?

• PO₄^3- 
• HNO₃ 
• NO₃^- 
• HPO₄^2-
  

What is the conjugate base in the following reaction?

• HCO₃^- 
• HCl
•  H₂CO₃ 
• ^Cl-

HSO₄^-(aq)+H₂O(l)      →       H₃O⁺(aq)+SO₄^2-(aq)

Identify the Base in the above reaction.

• HSO₄^-
• H₂O
• H₃O⁺
• SO₄^2-