Please help i dont really know what the subject is so-
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Answers: 3
Chemistry, 22.06.2019 04:00
Write the empirical chemical formula of calcium with a mass percent of 38.8, phosphorus with a mass percent of 20.0, and oxygen with a mass percent of 41.3.
Answers: 1
Chemistry, 22.06.2019 10:10
For the reaction, 4 a(g) + 3 b(g) => 2 c(g), the following data were obtained at constant temperature. experiment initial[a],mol/l initial [b],mol/l initial rate,m/min 1 0.200 0.150 5.00 2 0.400 0.150 10.0 3 0.200 0.300 10.0 4 0.400 0.300 20.0 which of the following is the correct rate law for the reaction? 1. rate = k[a]2[b]2 2. rate = k[a][b] 3. rate = k[a]2[b] 4. rate = k[a][b]2
Answers: 3
Chemistry, 22.06.2019 17:30
Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)
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Chemistry, 22.06.2019 23:10
Using the periodic table, complete the following. element: hydrogen symbol: hâ‚‚ molecular weight: g mass of one mole: g/mol
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Mathematics, 30.06.2019 16:10
Geography, 30.06.2019 16:10
Mathematics, 30.06.2019 16:10
Health, 30.06.2019 16:10
Mathematics, 30.06.2019 16:10
Biology, 30.06.2019 16:10
Mathematics, 30.06.2019 16:10
Physics, 30.06.2019 16:10
Mathematics, 30.06.2019 16:10
Mathematics, 30.06.2019 16:10
Mathematics, 30.06.2019 16:10
Mathematics, 30.06.2019 16:10