A student conducted an experiment where water was pipetted into a graduated cylinder and then weighed on a scale. the volume the student pipetted was 2.0 mL and the mass of the water was 2.12g. What is the density of the water 2.00 mL 2.12 g 2.12 g/mL 0.94 g/mL 1.06 g/mL
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.
A student conducted an experiment where water was pipetted into a graduated cylinder and then weighed on a scale. the volume the student pipetted was 2.0 mL and the mass of the water was 2.12g. What is the density of the water
- 2.00 mL
- 2.12 g
- 2.12 g/mL
- 0.94 g/mL
- 1.06 g/mL
- A student measured the height of a business card to be 6.5 cm and the length to be 7.2cm. What is the length of the business card millimeters?
- 0.72 milimeters
- 65 milimeters
- 72 milimeters
- 720 milimeters
- 0.65 millimeters
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