1. Calcium chloride is a salt that is added to roads and sidewalks in the winter to melt ice and snow. Which following properties of calcium chloride is
both a physical property and quantitative? (1)
(a) Calcium chloride has a melting point of 782°C.
(b) When heated to decomposition, calcium chloride produces chlorine gas.
(c) Calcium chloride is soluble in water.
(d) In the presence of sulfuric acid, calcium chloride reacts to form hydrogen chloride.
(e) Calcium chloride is a white crystalline solid at room temperature.

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the atomic number of carbon is six, which means that a carbon atom has six protons. carbon has three naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. which of these statements are true about carbon and its isotopes? select all that appl

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally