A chemist prepares a solution of sodium thiosulfate by measuring out of sodium thiosulfate into a volumetric flask and filling the flask to the mark with water. Calculate the concentration in of the chemist's sodium thiosulfate solution. Be sure your answer has the correct number of significant digits.

The question is incomplete, here is the complete question:

A chemist prepares a solution of sodium thiosulfate by measuring out 110. g of sodium thiosulfate into a 350. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's sodium thiosulfate solution. Be sure your answer has the correct number of significant digits.

The concentration of sodium thiosulfate solution is 1.99 mol/L

Explanation:

To calculate the molarity of solution, we use the equation:

Given mass of sodium thiosulfate = 110 g

Molar mass of sodium thiosulfate = 158.1 g/mol

Volume of solution = 350 mL

Putting values in above equation, we get:

Hence, the concentration of sodium thiosulfate solution is 1.99 mol/L

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.

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