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This item can be answered by using the concept of material balance. The amount of substance used for the reaction should be the same before and after the reaction occurred.
Amount of reactants = 3.55 grams + 4.60 grams = 8.15 grams
We are also given that the amount of product accounted for is only 6.25 grams, this entails that not all copper was reacted. Subtracting this value from 8.15 g will give us an answer of 1.9 grams.
Answer: 1.9 g of copper
If the difference in electronegativtiy for the atoms in a bond are greater than 0.4,we consider the bond polar, if the electronegativity is less than 0.4, we consider it non polar. if there are no polar bonds, the molecule is non polar.
To get radius, divide the diameter into 2. 3.6÷2 = 1.8 cm
Chemsits identify elements and compounds by using the Periodic Table. All elements have Atomic Numbers, Chemical Names, Atomic Mass, Period, and are usually colored and put into their group.