A student pours 28.0 g of Hg at a temperature of 87.6°C into a Styrofoam cup filled with water at 13.0°C. If the specific heat of Hg is 0.139 J/gºC, and the final temperature of the mixture is 15.5°C. how much
water was in the calorimeter?

Electrons are extremely important to what area of technology? a) anti-aging research b) household product development c) electronics d) drug discovery

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.

Identify arrows pointing to bonding electrons. done h-0-0-h ) intro