Chemistry, 28.06.2019 03:30 SavyBreyer
Asample of hydrated copper (ii) sulfate has a mass of 4.56 g. after heating, it has a mass of 2.92 g. what is the percent by mass of water in the hydrate?
Answers: 1
Chemistry, 21.06.2019 18:00
Acylinder is filled with 2.00 moles of nitrogen, 3.00 moles of argon and 5.00 moles of helium. if the gas mixture is at stp, what is the partial pressure of the argon
Answers: 1
Chemistry, 22.06.2019 19:20
Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?
Answers: 3
Asample of hydrated copper (ii) sulfate has a mass of 4.56 g. after heating, it has a mass of 2.92 g...
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