Representen en su cuaderno la unión de los siguientes átomos mediante la estructura de Lewis. F2, (flúor)
H2O (agua)
NH3, (amoniaco)
CH3 - CH3, (etano)
CH2=CH2, (eteno)
CH=CH (etino)
CO2, (dióxido de carbono)
HBr (ácido bromhidrico)
SiH4, (hidruro de silicio)
H2S (ácido sulfhídrico)

Señalen con un lápiz de color los electrones que se comparten en la
unión de los átomos.
Escriban de nuevo las estructuras; ahora solo indiquen con una línea el
enlace entre los átomos.
Identifiquen con diferentes colores los enlaces simples, dobles y triples.

13. calculate the initial concentration (before precipitation) of carbonate ions after the addition of each 0.05 ml of solution b to the 1.00 l beaker of solution a. divide the work among group members and write the answers in the table in model 3. assume the volume change as solution b is added is negligible. 14. notice the initial concentrations of zn2+ - and cu2+ in the table in model 3. a. explain how these were obtained from the data in model 2. b. as solution b is added and precipitates form, do these initial concentrations change? 15. use the data in model 2 to indicate the presence of precipitate (either znco3 or cuco3) after each 0.05 ml addition of solution b in model 3. 16. use the initial concentrations of carbonate ions and zinc ions to calculate the reaction quotient, qsp for the zinc carbonate scenarios in model 3. divide the work among group members and write the answers in the table in model 3. 17. use the initial concentrations of carbonate ion and copper(ii) ions to calculate the qsp for the copper(ii) carbonate scenarios in model 3. divide the work among group members and write the answers in the table in model 3.

Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?

How have the greenhouse gasses increased from the year 2000 to 2018