Chemistry, 10.07.2019 01:30 zhellyyyyy
Martina has a sample of an unknown substance, she measures the substance, its mass is 13.5 grams, and its volume is 5cm^3 which metal might her sample be made of? silver density: 10.49 g/cm^3 copper density: 8.96 gm/cm^3 iron density: 7.87 g/cm^3 aluminum density: 2.7 g/cm^3
Answers: 1
Chemistry, 22.06.2019 02:30
Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass
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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
Chemistry, 22.06.2019 16:30
An atom with 7 protons, 6 neutrons, and 7 electrons has an atomic mass of amu. (enter a whole number.) numerical answers expected! answer for blank 1:
Answers: 3
Martina has a sample of an unknown substance, she measures the substance, its mass is 13.5 grams, an...
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