The atoms undergo chemical changes.
New substances may be a product of the reaction.
Using the relative atomic weights of both copper and sulfur ie copper = 63.55 and sulfur is 32.06 so 63.55+32.06=95.56 total mass and so of this, copper = 63.55/95.56=66.4%. So to get 10 grams of copper, use the formula 10g=66.4%xCuS so CuS=10/0.664=15.06 grams of CuS.
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Hello!
Numbers from -998 and 999 are in between -999 and 1000.
I hope this was helpful! c:
Answer:
the answer is c
b/c contain more than one element
