The name of a water solution of hydrogen fluoride, hf(g), is
(a) fluoric acid
(b) fluorous acid
(c) perfluoric acid
(d) hydrofluoric acid
(e) hypofluorous acid

The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.

What type of organic molecule comprises the majority of a potato?

Apropane torch is lit inside a hot air balloon during preflight preparations to inflate the balloon. which condition of the gas remains constant