Chemistry, 25.10.2021 01:00 austinhamy1
Viết các phương trình phản ứng xảy ra khi cho lượng dư dung dịch H2XO4 loãng lần lượt vào các chất sau: Fe, KOH, MgO, Fe3O4 , FeS, KHCO3, BaCl2, Al(OH)3.
Answers: 1
Chemistry, 21.06.2019 20:30
1. calculate the approximate enthalpy of the reaction in joules. estimate that 1.0 ml of vinegar has the same thermal mass as 1.0 ml of water. iqnore the thermal mass of th sodium bicarbonate. note: it takes about 4.2 joules () to change 1.0 gram (1.0ml) of water 1.0 c
Answers: 2
Chemistry, 22.06.2019 10:30
Skills of homo sapiens were found an excavation. the skulls were preserved because the bodies were frozen. so, these fossils are (blank) fossils.the image shows the evolution of skulls beginning 2 to 3 million years ago. based on the image, modern human skulls(blank) ape skulls.
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.
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Chemistry, 22.06.2019 17:00
The biosphere of the earth is made up of what compound? organic or inorganic?
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Viết các phương trình phản ứng xảy ra khi cho lượng dư dung dịch H2XO4 loãng lần lượt
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