Ella holds an ice cream cone in her hand. She soon notices that her hand begins to feel cold. Which claim explains what is different about the particles that make up her hand?

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.

Select the correct location on the image identify the element that humans need to breathe. 2015 er r ights reserved

Can someone me out on this question for my national 5 chemistry homework