Which of the following is not an alkali? a) ammonium hydroxide
b) potassium hydroxide
c) copper oxide
d) sodium oxide

Which of the following best supports the concept that genetic information is passed on to offspring from both of their parents, not just one?

Some animals that try to adapt to climate changes eventually die due to starvation, as climate change alters the web.

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.