A 450.0 g piece of iron is heated in a flame and dropped into 500.0 g of water at 18°C. The final temperature of the water is 90.0°C. If the specific heat of iron is 0.473 J/g°C , how hot was the iron when it was removed from the flame? Pls show work :))

Matches the chemical name of each oxide of phosphorus to its chemical formula

Calculate the ratio of h+ ions to oh– ions at a ph = 7. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 7. are they the same? why or why not? record your comparison in table a. what is the concentration of h+ ions at a ph = 7? mol/l what is the concentration of oh– ions at a ph = 7? mol/l what is the ratio of h+ ions to oh– ions at a ph = 7? : 1

Which three statements represent the benefits of performing experiments using computer simulations?