Ng) A student prepares a calibration graph by measuring the absorbances of Cuso
solutions
of known concentrations.
A particulate drawing of a single Cu²+ ion is shown in the following box. Draw two H, O
molecules in the box to show the most likely orientation of H,0 molecules around the
Cu²+ ion.
Cu2+
Water Molecule

Can someone me with these questions plz.

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

Calculate - analysis of compound composed of iron and oxygen yields 174.86 of fe and 75.14g of o. what is the empirical formula for this compound?