Chemistry, 13.12.2019 18:31, Description
Un comprimé de vitamine c contenant 500mg de vitamine c est dissous pour préparer 500,0 ml de solution aqueuse. on note s1 la solution obtenue. on souhaite diluer cinq fois la solution s1 afin de préparer une solution diluée notée s2
Answers: 2
Chemistry, 21.06.2019 18:20, ineedhelp773
Which statement accurately describes the relationship between air pressure, air density, or altitude? as altitude increases, pressure increases. as altitude increases, air density increases. air pressure and density are lowest at sea level. denser air exerts more pressure than less dense air.
Answers: 2
Chemistry, 21.06.2019 20:30, lemonsalt9378
14. complete and balance the equations for the single displacement reactions. a. zn + pb(no3)2 -> b. al + niso4 -> 15. complete and balance the equations for the double displacement reactions. a. agno3(aq) + nacl(aq) -> b. mg(no3)2(aq) + koh(aq) -> 16. complete and balance the equations for the combustion reactions. a. __ ch4 + o2 -> b. __ c3h6 + o2 -> c. + o2 ->
Answers: 2
Chemistry, 22.06.2019 17:20, alexis3060
How do you know when a chemical reaction has occurred
Answers: 1
Un comprimé de vitamine c contenant 500mg de vitamine c est dissous pour préparer 500,0 ml de soluti...
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