Chemistry, 21.01.2020 21:31 jaideeplalli302
If 14g of ethene reacts with excess amount of steam to give 17.25g of ethanol what is the percentage yield
Answers: 3
Chemistry, 21.06.2019 14:10
Which of these will change if the air in aclosed bottle is heated? abcdthe mass of the airthe composition of the airthe air pressure in the bottlethe number of air molecules in the bottle
Answers: 3
Chemistry, 22.06.2019 08:30
The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true
Answers: 1
Chemistry, 22.06.2019 14:00
The two naturally occurring isotopes of chlorine are 35cl (34.969 amu, 75.77%) and 37cl (36.966 amu, 24.23%). the two naturally occurring isotopes of bromine are 79br (78.918 rm amu, 50.69%) and 81br (80.916 amu, 49.31%). chlorine and bromine combine to form bromine monochloride, brcl. 1. how many peaks will be present in a mass spectrum for brcl? the four combinations of molecule possible given these four isotopes are: 81br37cl, 81br35cl, 79br37cl, and 79br35cl. 2. what are the masses of the four different brcl molecules? express the masses using six significant figures, in decreasing numeric order (highest to lowest), separated by commas.
Answers: 3
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
If 14g of ethene reacts with excess amount of steam to give 17.25g of ethanol what is the percentage...
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