A useful constant Five samples are heated by adding the same amount of energy Q to each one. The copper sample has a mass of m kg that contains N moles of copper atoms. Rank the samples based on the total change in temperature after the heat is added without looking up the specific heats of the three metals. a. N moles of gold
b. M kg of gold
c. M kg (and N moles) Of copper
d. M kg of aluminum
e. N moles of aluminum

The atomic radius of sodium is 186 pm and of chlorine is 100 pm. the ionic radius for na+ is 102 pm and for cl– is 181 pm. in going from na to cl in period 3, why does the atomic radius decrease while the ionic radius increases? a. the inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. b. the inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. c. the outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. d. the outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. e. monatomic ions are bigger than the atoms from which they are formed.

Which substance is a steroid? cholesterol fatty acid monosaccharide trans fat

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