ist prepares a solution of sodium thiosulfate (Na₂S₂O3) by measuring out 113. g of sodium thiosulfate into a 150. mL volumetric flask and filling the the mark with water. te the concentration in mol/L of the chemist's sodium thiosulfate solution. Be sure your answer has the correct number of significant digits.

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Q: How do I calculate scientific figures?

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Q: A gallon of water has a weight of 8.34 pounds. How many kilograms is this?

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.