10. Which term is same for one mole of O2 and one mole of ethane C2H6
a) Number of atoms
b) Number of molecules
c) Volume
d) Mass

This chart represents the melting point of several substance. what besy explains the high melting point of the salt?

What is the molar mass of ca(cio4)2

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.