Calculate the quantity of heat needed to raise the temperature of 71.8 mL of water in a water heater from 23.6 oC to 61.2 oC is ___ kJ. Assume density of water equals 1.00 g/mL

Why is an elements atomic mass not listed as a whole number on the periodic table

Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat

Which of the following did jj thompson discover about atoms? a)an atom has an internal structure. b) atoms are tiny indivisible particles. c)electrons orbit the nucleus of an atom. d) the nucleus of an atom contains protons and neutrons.