Which change of phase is exothermic? A) H2O(s) → H2O(g)
B) CO2(s) + CO2(l)
C) H2S(g) + H2S(l)
D) NH3(l) → NH3(g)

George is a dalmatian puppy. describe what happens to light that allows you to see george’s black and white coat.

Ok, so i have 2 questions. try to answer them both: (the topic is fire) 1) how can you represent the chemical reaction of fire? 2) what kind of bond is formed in this chemical reaction

Amanda pushes a box across the room with a force of 30 n. it accelerates at 5 m/s/s. what is the mass of the box? * 6 kg 1.16 kg 30 kg 5kg