Question
Define chemical symbol and what is the significance of a chemical symbol. who first invented a chemical symbol.
Answer:
Chemical symbol - notation of one or two letters representing a chemical element.
J.J Berzelius - Swedish Scientist introduced chemical symbol in 1813.
The significant of chemical symbol is to have shorthand way to represent an element on the periodic table. it also used to standardized the language of chemistry and to identify elements and atoms in a chemical formula.
Explanation:
1 significant figure, because there is no decimal after the zero the zero doesn't count.
Answer:
during the nuclear reactions the energy produced is in the form of heat and then heats up water which in tern turns a generator
This is the concept of how nuclear reactors work
The answer is there are 0.25 moles in 15.5 grams of SiO2. To convert grams to moles you put the amount given over the molar mass of the substance and divide to solve.