ACTIVIDAD 2: Balancee las ecuaciones siguientes por el método de ensayo o error:
1-
CS2 + Cl2 - CCl4 + S2Cl2
2-
CaC2 + H2O
Ca (OH)2 + C2H2
3-
Al + Cr203
Al2O3 + Cr
4-
KCIO3-
KCI + O2
5-
C4H10 + O2
H2O + CO2
6-
Al(OH)3
> H2O + Al2O3
7-
NO + 02
NO2
8-
CaCl2 + Na2CO3-NaCl + CaCO3
9.
AgCN
Ag + C2N₂
10-
N2O5
NO₂ & O₂​

Read these sentences from the text. near the equator, the tropics receive the most rain on a consistent basis. as a result, the fresh water falling into the ocean decrease the salinity of the surface water in that region. [. .] . . as the salt content of sea water increases, so does its density. what can you infer about how rain affects the density of surface water near the equator?

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.