![Chemistry](/tpl/images/cats/himiya.png)
![answer](/tpl/images/cats/otvet.png)
Answers: 3
Other questions on the subject: Chemistry
![image](/tpl/images/cats/himiya.png)
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
![image](/tpl/images/cats/himiya.png)
![image](/tpl/images/cats/himiya.png)
Chemistry, 23.06.2019 13:00, madelyngv97
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
![image](/tpl/images/cats/himiya.png)
Chemistry, 23.06.2019 19:30, marlandwilliams10
Which of the following is a polyatomic ion? a. calcium, ca2+ b. carbide, c4- c. sulfate, so4 d. selenide, se2-
Answers: 1
Do you know the correct answer?
During operation, which half-reaction occurs at the cathode in each type of cell....
Questions in other subjects:
![Konu](/tpl/images/cats/biologiya.png)
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/istoriya.png)
History, 21.02.2020 18:10
![Konu](/tpl/images/cats/mir.png)
World Languages, 21.02.2020 18:10
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/ekonomika.png)
![Konu](/tpl/images/cats/obshestvoznanie.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 21.02.2020 18:11
![Konu](/tpl/images/cats/obshestvoznanie.png)