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Egypt had about 2000 letter/symbols in their writing
The first letter is written in capital letter and the second if it has doesn't. Write atomic number in the right inferior side.
The products are sodium chloride and water. Na2O + 2HCl = 2NaCl + H2O . NB When writing chemical symbols remember;_ #1 Single letter symbols are ALWAYS a CAPITAL Letter. #2 Double letter symbols are first letter is a capital letter and second letter is small/lowe case. Hence 'NA' is incorrect it should be 'Na',
The first letter must be capitalized and all others must remain lower case.
Rainbows Rain
H2O (water) is a compound molecule. Ca, Na, Mg are elemental metals. NB When writing elemental symbols;- Single letter symbols are always a CAPITAL letter e.g. 'O' oxygen. Double letter symbols are always written as , first letter is a capital letter and the second letter is lower/small case. e.g. 'Ca'( Calcium). Na(Sodium) , & Mg (Magnesium). NOT as given with all capital letters.
The first letter must be capitalized and all others must remain lower case.
No such formula as 'cas'. However, if you mean 'CaS' , this is calcium sulphide. NB when writing elemental symbols, single letter symbols are ALWAYS a CAPITAL letter e.g. S(sulphur). A two letter symbol is always written , first letter is a CAPITAL letter and the second letter is always small/lower case, e.g. Ca(calcium)
Au
First of all , what is 'So2'. if you mean SO2. Then there are three atoms. They are 1 x S = 1 x sulphur 2 x O = 2 x oxygen. NB When writing chemical symbols , remember single letter symbols are ALWAYS a CAPITAL Letter. Two letter symbols are , First letter is a capital letter ansd the second letter is small/lower case. This is the internationally recognised standard. See the Periodic Table. An element of the symbol 'So' does not exist in the Periodic Table.
In writing by sending a letter along with the bill.In writing by sending a letter along with the bill.In writing by sending a letter along with the bill.In writing by sending a letter along with the bill.
Art symbols are a picture that represents a object,letter or animal