Answer:
to hard im only in year 8
Explanation:
Percentage
by mass is the amount in mass of a component in a mixture per 100 unit of mass of the total
mixture. Percentage by mass is the same as %w/w. In order to determine this value, we need to know the mass of the substance in question and the total mass of the sample. In this case, we have to know the mass of Fe by doing certain calculations. Then, we divide this value by the total mass given of the ore, 4.05 g and multiply by 100%. It should be expressed as follows:
Percent by mass = mass of Fe in ore / 4.05 g ore sample x 100
However, the question is lacking some information so we cannot really specify the answer.
C. Linnaeus <span>The Swedish botanist Carl Linnaeus is regarded as the father of </span>taxonomy<span>, as he </span>developed<span> a </span>system<span> known as Linnaean </span>classification<span> for categorization of </span>organisms<span> and binomial nomenclature for naming </span>organisms<span>.</span>
I believe the appropriate pair is O and S, Periodic table represents arrangements of elements ordered by their atomic number,physical and chemical properties. Both sulfur and oxygen are in the same group of the periodic table (group 6), they have a valency of 2, This means they have a greater similarity in chemical and physical properties.
