Chemistry, 24.09.2019 09:50 rrrrainy

What do all the elements in one row of the periodic table have in common?

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Chemistry, 21.06.2019 18:00, darg3990rgp2t0r2

Does anyone know a lot about how to: - calculate mass of magnesium metal - calculate the actual yield of magnesium oxide - calculate the theoretical yield of mgo - calculate the percent yield of mgo - determine the percent yield of mgo - determine the average percent yield of mgo i had to do an online lab and its asking these questions but i have no idea where to start or how to be able to find these things. i can post the chart of the data from the lab or if you can tell me exactly how i can find each.

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Chemistry, 22.06.2019 12:00, angtrevv

In a laboratory, 1.55mg of an organic compound containing carbon, hydrogen, and oxygen is burned for analysis. this combustion resulted in the formation of 1.45mg of carbon dioxide and .89 mg of water. what is the empirical formula for this compound?

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Chemistry, 22.06.2019 19:30, amandamiro05

Helium decays to form lithium. which equation correctly describes this decay?

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Chemistry, 23.06.2019 05:00, xxaurorabluexx

Which of the following describes qualitative data? a) recording the temperature of a solid as it is warmed. b) noting the color of a solution as it is heated. c) measuring the volume of an object by water displacement. d) taking the mass of an object using a balance.