HURRY How much energy is needed to raise the temperature of a 17.2 g metal block by 21.3 degrees Celsius if its specific heat is 0.28

brainliest if correct

What diagram shows the ionic compound of magnesium oxide

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

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.