When a concentrated acid and fresh water, both at room temperature, are mixed together the result is a solution that is very hot. how does aristotle's model of matter explain this?

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)

Which change in temperature is the smallest? a change of 1 thomson degree a change of 1 kelvin degree a change of 1 fahrenheit degree a change of 1 celsius degree