What attracts heat more? black or aluminum foil?
2 answers:
Answer:
Black – the color that absorbs all visible wavelengths of light – attracts the most heat, followed by violet, indigo, blue, green, yellow, orange and red, in descending order.
Black Foil, BlackWrap, Lindcraft Foil, Cinefoil and Shadowfoils are all names for black aluminum foil that's primarily used to block out light and is attached to light fixtures and or their barn doors. Used in any situation where extreme heat might otherwise burn flags or cutters.
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Answer:
The charge carried by each ion (oxidation state of each atom)
Explanation:
If we have an ionic compound and we want to write its formula, we must first know the magnitude of charge on each ion (shown as oxidation state of the atoms involved) because the magnitude of charge on each ion is eventually crisscrossed and gives the subscript (number of atoms) for each atom in the formula.
For instance, let us write the formula of calcium bromide. Ca has a charge of +2 while Br has a charge of -1. If we exchange the charges and ignore the signs such that the crisscrossed charges form subscripts we can now write; .