Answers: 3
Chemistry, 21.06.2019 17:30
Supongamos que estás estudiando dos estrellas. ambas estrellas tienen la misma magnitud aparente, pero la estrella a tiene una magnitud absoluta mayor que la estrella b. ¿que puedes decir acerca de la distancia a la tierra de estas dos estrellas?
Answers: 3
Chemistry, 22.06.2019 12:30
Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together
Answers: 1
Chemistry, 22.06.2019 17:00
Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.
Answers: 2
Chemistry, 22.06.2019 23:00
Consider the reaction: 2al(s) + fe2o3(s) → al2o3(s) + 2fe(s) the δhf for fe2o3(s) = -824.3 kj/mole. the δhf for al2o3(s) = -1675.7 kj/mole. finish the equation. δhrxn = [(1)( kj/mole) + (2)( kj/mole)] - [(1)( kj/mole) + (2) ( kj/mole)]
Answers: 1
How many moles of H20 are required to react completely with 7.30 moles of NO2?
3NO2(g) + H20(1)
English, 26.09.2019 03:30
Mathematics, 26.09.2019 03:30
Chemistry, 26.09.2019 03:30
English, 26.09.2019 03:30
Computers and Technology, 26.09.2019 03:30
History, 26.09.2019 03:30
Social Studies, 26.09.2019 03:30
Mathematics, 26.09.2019 03:30
History, 26.09.2019 03:30
Geography, 26.09.2019 03:30
Mathematics, 26.09.2019 03:30
Mathematics, 26.09.2019 03:30
Chemistry, 26.09.2019 03:30
Health, 26.09.2019 03:30