Which element was first discovered in space before it was discovered on Earth?
nitroge...
Chemistry, 11.03.2021 04:00 garcikyl000
Which element was first discovered in space before it was discovered on Earth?
nitrogen
helium
carbon
hydrogen
Answers: 2
Chemistry, 22.06.2019 00:30
Butadiene undergoes a reaction at a certain temperature in the gas phase as follows: 2c4h6(g) --> c8h12(g) the following data were collected for this reaction: time (min) [c4h6] (m) 0 0.36 15 0.30 30 0.25 48 0.19 75 0. determine the order of the reaction and the rate constant. 1st order and k = 4.3x10 -4 s-1 1st order and k = 2.3x10-4 s-1 2nd order and k = 4.3x10-4 s-1 2nd order and k = 2.3x10-4 s-1 zero and k = 4.3x10-4 s-1
Answers: 3
Chemistry, 22.06.2019 01:00
Which statement correctly describes potassium iodide, ki? there is a one-to-one ratio of potassium ions to iodide ions. potassium gains electrons and iodine loses electrons during the reaction. the lattice is held together by potassium anions and iodide cations.
Answers: 1
Chemistry, 22.06.2019 16:00
Uranium can supply energy for the worlds electricity without admitting harmful greenhouse gases which of these statements best describes an outcome of uranium mining
Answers: 1
Chemistry, 22.06.2019 20:30
How many grams of phosphorus are contained in 5.09 moles of phosphorus?
Answers: 1
Biology, 29.04.2021 21:30
Mathematics, 29.04.2021 21:30
English, 29.04.2021 21:30
Geography, 29.04.2021 21:30
English, 29.04.2021 21:30
Mathematics, 29.04.2021 21:30
History, 29.04.2021 21:30
Biology, 29.04.2021 21:30
Mathematics, 29.04.2021 21:30
Mathematics, 29.04.2021 21:30