How many joules must be added to a 1000 g iron skillet to increase its temperature from 25°C to 250°C? The specific heat of iron is 0.449 J/gºC.
A) 449 J
B) 101,025 J
C) 50,000 J
D) 112,250 J

This chart represents the melting point of several substance. what besy explains the high melting point of the salt?

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?

Select all of the statements which are true. electrons are located in shells or orbits around the atom. electrons orbit slowly around the atom. electrons travel in one flat path around the nucleus of an atom. the valence of an atom is determined by the number of electrons in the atom's outermost shell.