Calculate the ratio of Htions to OH ions at a pH = 8.
Find the concentration of H+ ions to OH ions listed in
Table B of your Student Guide. Then divide the H
concentration by the OH concentration Record this
calculated ratio in Table A of your Student Guide.
Compare your approximated and calculated ratios of H?
ions to OH-ions at a pH = 8. Are they the same? Why or
why not? Record your explanation in Table A
What is the concentration of Htions at a pH = 8?
mol/L
What is the concentration of OH ions at a pH = 8?
moll
What is the ratio of H+ ions to OH ions at a pH = 8?
1 OR 1

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."

the product of the pressure and volume is also constant

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o