A student added 2.50 mj of energy to 12.0 kg of water using an electric heater. If the water was initially at 19.0 what was the final temperature of the water? Specific heat capacity of water=4.18 j

What is the composition, in atom percent, of an alloy that consists of 4.5 wt% pb and 95.5 wt% sn? the atomic weights for pb and sn are 207.19 g/mol and 118.71 g/mol, respectively.(a) 2.6 at% pb and 97.4 at% sn(b) 7.6 at% pb and 92.4 at% sn(c)97.4 at% pb and 2.6 at% sn(d) 92.4 at% pb and 7.6 at% sn

Which is mostly likely why many scientists reject the cold fusion theory

This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.