How many grams of water (s=4.184 J/g . C) will release 1367 J of heat when cooled from 45.2 C to 36.2 C?

What’s the percent by mass of carbon in c10h14n2

Kc = 0.040 for the system below at 450oc. if a reaction is initiated with 0.40 mole of cl2 and 0.40 mole of pcl3 in a 2.0 liter container, what is the equilibrium concentration of cl2 in the same system? pcl5(g) ⇄ pcl3(g) + cl2(g)

Long term exposure to waves can cause sunburns and skin cancer. a) visible b) infrared c) gamma rays d) ultraviole