Chemistry, 29.07.2019 08:30 carjsan5656
Listed below are sets of elements. which group contains elements that have the following characteristics: 1) at least one is a metalloid. 2) at least one forms an ion with a charge of -2. 3) at least one is a gas. 4) at least one is a halogen. a) oxygen, fluorine, and aluminum b) chlorine, sulfur, and silicon c) arsenic, oxygen, neon, hydrogen d) silicon, magnesium, neon, iodine
Answers: 1
Chemistry, 21.06.2019 21:30
The density of an unknown gas at 98ยฐc and 740 mmhg is 2.50 g/l. what is the molar mass of the gas with work showed?
Answers: 1
Chemistry, 22.06.2019 04:40
Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)
Answers: 2
Listed below are sets of elements. which group contains elements that have the following characteris...
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