Chemistry, 07.04.2020 06:17 hockeystar0033
Why is helium so commonly used in welding and for growing high-purity silicon crystals?
Answers: 2
Chemistry, 22.06.2019 06:00, citlalli30
An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have
Answers: 2
Chemistry, 22.06.2019 18:00, jeepjose58
What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees celsius to a solid at the same temperature? melting point of substance y = 35 degrees c; δhvaporization = 3.67 j/mol; δhfusion = 3.30 j/mol. mwsubstance y = 28.22 g/mol. −12.4 j −3.51 x 102 j 1.24 x 101 j 351 j
Answers: 1
Why is helium so commonly used in welding and for growing high-purity silicon crystals?...
English, 02.03.2021 23:40
Chemistry, 02.03.2021 23:40
English, 02.03.2021 23:40
English, 02.03.2021 23:40