Answered Essay: Which of the following are pure substances? Calcium chloride, used to melt ice on roads,

Which of the following are pure substances? Calcium chloride, used to melt ice on roads, consists of two elements, calcium and chlorine, in a fixed mass ratio. Sulfur consists of sulfur atoms combined into octatomic molecules. Cytosine, a component of DNA, consists of H, C, N, and O atoms bonded in a specific □ arrangement. Baking powder, a leavening agent, contains 26% to 30% sodium hydrogen carbonate and 30% to 35% calcium dihydrogen phosphate by mass.

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Which of the following are pure substances? Calcium chloride, used to melt ice on roads, consists of two elements, calcium and chlorine, in a fixed mass ratio. Sulfur consists of sulfur atoms combined into octatomic molecules. Cytosine, a component of DNA, consists of H, C, N, and O atoms bonded in a specific arrangement. Baking powder, a leavening agent, contains 26% to 30% sodium hydrogen carbonate and 30% to 35% calcium dihydrogen phosphate by mass.

Expert Answer

Answer

Explanation :

b ) sulfur is an element which can exists in nature as octaatomic molecule. so it is pure substance

a) calcium chloride , it is a mixture of calcium and chloride. so it is not pure.

c) cystone is a pure substance . it is one of constituent in DNA

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