Chemistry, 25.04.2020 04:52, Victoriag2626
Which tool should you choose to measure time? A. meniscus B. stopwatch C. microscope D. triple-beam balanceOn a meter stick, one millimeter is generally the . A. length of the whole stick B. length of one thousand sticks C. distance between two of the numbered lines D. distance between two of the small, unnumbered lines
Answers: 1
Chemistry, 21.06.2019 19:30, bryneosburn
Whatβs a special glass that most beakers are made of
Answers: 1
Chemistry, 22.06.2019 05:00, foreignking02
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
Chemistry, 22.06.2019 10:30, ciel8809
Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.
Answers: 1
Which tool should you choose to measure time? A. meniscus B. stopwatch C. microscope D. triple-beam...
Mathematics, 21.09.2020 05:01
Mathematics, 21.09.2020 05:01
Biology, 21.09.2020 05:01