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Benedict's solution
A substance called DNA (DeoxyriboNucleic Acid) contains the instructions for life.
DNA is the substance within every living cell that contains the instructions for life.
Magnetite can be black and it has a black streak. It is metallic and iron ore
chloroplast
Benedict's solution
iron
Magnetite
A pure substance is one which contains only that substance and nothing else. An impure substance contains other substances in varying amounts.
A substance called DNA (DeoxyriboNucleic Acid) contains the instructions for life.
DNA is the substance within every living cell that contains the instructions for life.
DNA is the substance within every living cell that contains the instructions for life.
An ore is a rock that contains minerals that are useful. For an ore to be considered an ore reserve, it must be economically viable (the value of the extracted mineral must exceed the cost of extraction and processing) and must be technically and legally possible to extract.
In order to determine this, it is necessary to know what solution we are looking at. One we know that we can look at the grams in a mole of the substance and determine the percentages based on molecular weight.
A substance that contains no acid.
chloroplast
Magnetite can be black and it has a black streak. It is metallic and iron ore