The apparent activation energy for the chemical reactions which produce light in a firefly is 50. kJ mol-1. How many times slower would you expect the firefly to blink if you cooled down its surroundings from 300. K to 270. K

How many moles are in 250 grams of tungsten (w)? * 4.4x10^23 moles 4.2x10^23 moles 0.7 moles 1.4 moles

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

650.j is the same amount of energy as? 2720cal1550cal650.cal2.72cal