How many kilograms (kg) are there in 5.6x10^7 nanograms (ng)? a.) 5.6x105 kg b.) 2.8x10-5 kg c.) 5.6x10-5 kg d.) 0.0056 kg

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A: Law of definite proportions: It states that chemical compounds has formed always in a fixed ratio. 1…

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A: Given masses:

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A: For calculating the density of the unknown metal sample, we need its mass and volume.

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Q: A pycnometer is a glass flask with a tight fitting glass stopper that can be used to determine the…

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A:

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A: The ratio of mass to the volume is known as density.

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A: Given information,    3.25 × 103 terameters

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A: Ethane having formula C2H6

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A: Filtration is the most appropriate method for separating a solution of water and which substance?

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A: Mass of a substance = Volume of the substance x Density of the substance.

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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.