A sample of 250 g of water are heated from 40°C to 121°C, calculate the amount of heat energy absorbed. 552,000 Joules
100,416 Joules
638, 555 Joules
73,885 Joules

Which statement best describes the oxidation numbers of the atoms found in magnesium chloride? a. magnesium has a 2- oxidation number and chlorine has a 1+ oxidation number. b. magnesium has a 2- oxidation number and chlorine has a 2+ oxidation number. c. magnesium has a 2+ oxidation number and chlorine has a 1- oxidation number. d. magnesium has a 1+ oxidation number and chlorine has a 1- oxidation number.

Acrystal that absorvd water from air is (blank)a. aqueousb. homogenousc. hygroscopicd. efflorescent

Find the mass, in grams, of 5.00*10^23 molecules of f2