A 265 mL sample of 0.45 M HNO 3 is diluted to 315 mL. Whatis the molarity of the

Question

A 265 mL sample of 0.45 MHNO3 is diluted to 315 mL. Whatis the molarity of the resulting solution?
1 M
To what volume must 50.0 mL of 1.50 M HCl be dilutedto produce 0.360 M HCl?
1 mL
A balloon has a volume of 2.75 Lindoors at a temperature of 20°C. Ifthe balloon is taken outdoors on a cold day when the airtemperature is -15°C (5°F), what will its volume be inliters? Assume constant air pressure within the balloon.
1 L


A 265 mL sample of 0.45 MHNO3 is diluted to 315 mL. Whatis the molarity of the resulting solution?
1 M
To what volume must 50.0 mL of 1.50 M HCl be dilutedto produce 0.360 M HCl?
1 mL
A balloon has a volume of 2.75 Lindoors at a temperature of 20°C. Ifthe balloon is taken outdoors on a cold day when the airtemperature is -15°C (5°F), what will its volume be inliters? Assume constant air pressure within the balloon.
1 L

Explanation / Answer

A 265 mL sample of 0.45 MHNO3 is diluted to 315 mL. Whatis the molarity of the resulting solution?
MV = M'V' M' = MV / V'       = 0.45 * 265 / 315       = 0.3785 M
To what volume must 50.0 mL of 1.50 M HCl be dilutedto produce 0.360 M HCl?
MV= M'V' V' = MV ' /M'     = 1.5 * 50 / 0.36     = 208.33 mL

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