Answers: 1
Chemistry, 21.06.2019 19:30
List the two type of transporst that the cell in orde to transport molecules acroos the membrane
Answers: 1
Chemistry, 21.06.2019 20:30
Which of the following true? a_volcanoes and earthquakes often near the plate boundaries. b_volcanoes occur whereve there are tall mountains. c_earthquakes cause volcanoes in the same location to erupt violently d_volcanoes and earthquakes occur only where plates are colliding with each other
Answers: 2
Chemistry, 21.06.2019 21:30
Which substances have the lowest melting points: ionic covalent, or metallic
Answers: 1
Chemistry, 22.06.2019 05:00
1)each group 16 element has how many valence electrons? ( )4 ( )6 ( )8 ( )16 2)how many dots appear in the dot structure for calcium ion, ca2+? ( )zero ( )one ( )two ( )eight 3) which of the following atoms forms a cation to obtain an octet of outer shell electrons? ( )magnesium ( )oxygen ( )fluorine ( )helium 4) an al3+ ion contains 13 protons and 10 electrons. ( )true ( )false 5) valence and non-valence electrons are represented in lewis dot structures. ( )true ( )false
Answers: 3
Which chemical equation follows the law of conservation of mass?
O A. 2LIOH + H2CO3 - LiCO3 + 2H20<...
History, 12.08.2020 22:01
Mathematics, 12.08.2020 22:01
Chemistry, 12.08.2020 22:01
History, 12.08.2020 22:01
Mathematics, 12.08.2020 22:01