Chemistry, 01.11.2020 21:20 ivannis875
Urgent : In the reaction of aluminum and iron(III) oxide to form iron and aluminum oxide, H is -850 kJ. How many grams of aluminum oxide are formed when 350 kJ of heat are released? 2 Al (s) + Fe2O3 (s) 2 Fe (s) + Al2O3 (s) H= -850 kJ
Answers: 2
Chemistry, 21.06.2019 21:00
Harvey kept a balloon with a volume of 348 milliliters at 25.0˚c inside a freezer for a night. when he took it out, its new volume was 322 milliliters, but its pressure was the same. if the final temperature of the balloon is the same as the freezer’s, what is the temperature of the freezer? the temperature of the freezer is kelvins.
Answers: 2
Chemistry, 22.06.2019 21:20
One way in which the useful metal copper is produced is by dissolving the mineral azurite, which contains copper(ii) carbonate, in concentrated sulfuric acid. the sulfuric acid reacts with the copper(ii) carbonate to produce a blue solution of copper(ii) sulfate. scrap iron is then added to this solution, and pure copper metal precipitates out because of the following chemical reaction: (s) (aq) (s) (aq) suppose an industrial quality-control chemist analyzes a sample from a copper processing plant in the following way. he adds powdered iron to a copper(ii) sulfate sample from the plant until no more copper will precipitate. he then washes, dries, and weighs the precipitate, and finds that it has a mass of .
Answers: 2
Chemistry, 22.06.2019 23:30
If it is an isoelectronic series select true, if not select false. o2-, s2-, se2-, te2- na+, k+, rb+, cs+ n3-, p3-, as3-, sb3- ag, cd+, sn3+, sb4+ f-, cl-, br-, i- f-, ne, na+, mg2+ s2-, s, s6+
Answers: 1
Chemistry, 23.06.2019 00:10
Covalent compounds: mastery test select the correct answer what is formed when atoms join together with a covalent bond? a. an ion b. a molecule c. a neutral atom d. a noble gas
Answers: 3
Urgent : In the reaction of aluminum and iron(III) oxide to form iron and aluminum oxide, H is -850...
Chemistry, 31.08.2019 12:50
Chemistry, 31.08.2019 12:50
Social Studies, 31.08.2019 12:50
History, 31.08.2019 12:50
Biology, 31.08.2019 12:50
Chemistry, 31.08.2019 12:50
Mathematics, 31.08.2019 12:50
Chemistry, 31.08.2019 12:50
Mathematics, 31.08.2019 12:50
World Languages, 31.08.2019 12:50
Biology, 31.08.2019 12:50
Mathematics, 31.08.2019 12:50
Mathematics, 31.08.2019 12:50