Using the equation below determine the amount of energy produced if 500.0 g of butane is burned in the presence of oxygen. 2C4H10(g) + 13O2(g) → 8CO2(g) + 10H2O(g) ΔH = -1248 KJ

Asap! how do you lengthen a pattern piece? (family and consumer science, sewing)

Which of the following is most likely true about water in chemical systems? a) water dissolves nonpolar ionic compounds. b) water dissociates ionic compounds. c) water dissociates covalent molecules. d) water dissolves nonpolar covalent substances.

In one or two grammatically correct sentences, write a definition for the term molecule geometry