Olaf the snowman has a mass of 38 kg, and a body temperature of -4.2 degrees Celsius. He took a sip of hot coffee with a volume of 15 mL and a temperature of 80.0 degrees Celsius. The coffee turned into ice and eventually become a part of Olaf. Determine the final temperature of Olaf.

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.

Read the claim. breakfast is an important meal. it jump starts the body’s process of using calories to break down food. appetite can decrease with age, but going too long without eating causes metabolism to slow down. current research shows that incorporating legumes such as lentils and chickpeas into meals boosts metabolism for twenty-four hours. who might benefit from this claim? people who have a fast metabolism stores that sell exercise equipment people who take vitamin supplements grocery stores that sell legumes

Identify the lewis base in this balanced equation: fe3+ h2o fe(h2o)63+