Chemistry, 07.10.2020 01:01 gonsalex6688
Gabriella's teacher suggests that she use a strong solution of vinegar to kill the
Weeds. Vinegar is acidic and prevents plants from maintaining homeostasis.
Gabriella sets up a controlled experiment to test her hypothesis that the solution
will kill the weeds without harming nearby vegetables. She plans to spray one
group of weeds with the solution and another group of weeds with water as a
control
What two variables should Gabriella keep the same between the control group of
weeds and the sprayed weeds to make sure that the spray has had an effect.
1
2.
Answers: 2
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
Chemistry, 22.06.2019 09:00
What is the percentage composition of carbon in the compound ch4
Answers: 1
Chemistry, 22.06.2019 10:00
Why is the structure of molecule important to its function?
Answers: 1
Chemistry, 22.06.2019 12:00
Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.
Answers: 1
Gabriella's teacher suggests that she use a strong solution of vinegar to kill the
Weeds. Vinegar i...
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