Sunday
March 29, 2015

Homework Help: chemistry

Posted by Martin on Monday, October 11, 2010 at 2:37pm.

URGENT!!

You wish to prepare 1 L of a 0.02 M potassium iodate solution. You require that the final concentration be within 1% of 0.02 M and that the concentration must be known accurately to the fourth decimal place. How would you prepare this solution? Specify the glassware you would use, the accuracy needed for the balance, and the ranges of acceptable masses of KIO3 that could be used.

(a) To make this solution (ideally) you would need ________ grams of potassium iodide dissolved in enough water to make up 1 L of solution.

fill in the blank

(b)What is the least accurate balance that could be used to make this solution?

1 - a mass spectrometer (accuracy = 0.2 g)
2 - an electronic balance (accuracy = 2 mg)
3 - a bathroom scale (accuracy = 2 kg) 4 - a kitchen scale (accuracy = 2 g)
5 - an analytical balance (accuracy = 0.2 mg)
6 - a triple beam balance (accuracy = 20 mg)

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

CHemistry Please Help..............LAB - Standardization of the Sodium ...
Chemistry - Ca(IO3)2(s) ⇌ Ca^(2+)(aq) + 2IO3^(-)(aq) First, you poured 30 ...
chemistry - 2. A researcher is often required to prepare solutions in the lab. ...
chemistry - A 25.00 mL solution of potassium nitrate (KNO3) was diluted to 125.0...
chemistry - A 25.00 mL solution of potassium nitrate (KNO3) was diluted to 125.0...
chemistry - a 30.0 ml solution of potassium nitrate was diluted to 125 ml and 25...
CHemistry Please Help. DR. BOBB - Standardization of the Sodium Thiosulfate ...
Chemistry - Determine the number of grams of Potassium Iodate present in 10.0 g ...
Chemistry - A student makes a solution by dissolving 55.8 grams of potassium ...
Chemistry - A student makes a solution by dissolving 55.8 grams of potassium ...

Members