The “normal” lead content in human blood is about0.40 part per million (i.e., 0.40 g of lead per milliongrams of blood). A value of 0.80 part per million (ppm)is considered to be dangerous. How many grams of leadare contained in 6.0 × 103 g of blood (the amount in anaverage adult) if the lead content is 0.62 ppm?
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.
The “normal” lead content in human blood is about
0.40 part per million (i.e., 0.40 g of lead per million
grams of blood). A value of 0.80 part per million (ppm)
is considered to be dangerous. How many grams of lead
are contained in 6.0 × 103
g of blood (the amount in an
average adult) if the lead content is 0.62 ppm?
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