A 25 degrees C, a 15,000 g sample of an unknown liquid was determined tohave a volue of 19.01 mL. Calculate the densirty of the liquid. At 25 degrees C, water has a density of 0.9882 h.mL. If the unknown liquid had been water. what voulme would it have had?
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
1. A 25 degrees C, a 15,000 g sample of an unknown liquid was determined tohave a volue of 19.01 mL. Calculate the densirty of the liquid. At 25 degrees C, water has a density of 0.9882 h.mL. If the unknown liquid had been water. what voulme would it have had?
2. A graduacted cylinder was filled with water until the voulume until the voulme read 55.0 mL. A rubber stopper was weighed and determined to have a mass of 6.782 g. The rubber stopper was carefully lowered into the graducated cylinder, and the volume was measure to be 60.6 mL. Calculate the denisty of the rubber stopper.
3. A 0.825 g pice of copper foil (d = 8.94 g/cm^3) measures 5.00 cm x 7.50 cm. Caculate the volume of the copper foil as well as caculate the thickness of the copper foil.
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