When an atom of calcium (Ca) forms an ion by losing two electrons, what is the ion’s type and charge? cation, 2+

anion, 2−

cation, 2−

anion, 2+

What type of organic molecule comprises the majority of a potato?

What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees celsius to a solid at the same temperature? melting point of substance y = 35 degrees c; δhvaporization = 3.67 j/mol; δhfusion = 3.30 j/mol. mwsubstance y = 28.22 g/mol. −12.4 j −3.51 x 102 j 1.24 x 101 j 351 j

Nan element’s square on the periodic table, the number with the greatest numerical value represents the