The reaction HCI (1) + H206) → H30(aq) + Claq) can be abbreviated as HCI – H+ + Cl". How is this apparently important omission justified?
A) It's generally understood that H3O+ is a hypothetical intermediary.
B) Because water isn't important to the reaction
OC) it isn't justified, and the abbreviation is an error.
OD) It's understood that H+ doesn't exist on its own in water, and H307aq)+ Clag)
are both aqueous.

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)

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