For the given equation [Co(H2O)6] 2+ (aq) + 4Cl- (aq) [CoCl4] 2- + 6H2O(l) Take an aliquot of the 0.05 M CoCl2·6H2O solution that is in 6.0 M HCl. Use the UV-visible spectrophotometer to record the absorbance spectrum of the equilibrium mixture between 400 and 800 nm. Temperature Absorbance Concentration 10 0.66 0.00144 20 0.96 0.00166 30 1.34 0.00232 40 2.21 0.00400 1-How was the [ ] calculated? 2-Calculate K at 20OC . 3-Calculate ∆G0 at the same temperature. 4-Explain how to determine ∆H0 and ∆S0 experimentally.

How many electrons does silver have to give up in order to achieve a sido noble gas electron configuration

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? a. the balloons both rise. the cold balloon is larger than the warm balloon. b. the balloons rise at the same rate. both balloons are the same size. c. the warm balloon expands and rises. the cold balloon shrinks and sinks. d. the cold balloon expands and rises. the warm balloon shrinks and sinks.

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of tthe table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.