Baking soda is sodium bicarbonate (nahco3). when you heat baking soda, it breaks down into sodium carbonate powder (na2co3), water vapor, and carbon dioxide. the enthalpy of this reaction is 129 kj. write a correct thermochemical equation for this reaction, explain how you came up with this equation, and explain what it tells you about the reaction.

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins

The two naturally occurring isotopes of chlorine are 35cl (34.969 amu, 75.77%) and 37cl (36.966 amu, 24.23%). the two naturally occurring isotopes of bromine are 79br (78.918 rm amu, 50.69%) and 81br (80.916 amu, 49.31%). chlorine and bromine combine to form bromine monochloride, brcl. 1. how many peaks will be present in a mass spectrum for brcl? the four combinations of molecule possible given these four isotopes are: 81br37cl, 81br35cl, 79br37cl, and 79br35cl. 2. what are the masses of the four different brcl molecules? express the masses using six significant figures, in decreasing numeric order (highest to lowest), separated by commas.

Ahypothesis must be testable and falsifiable to be considered scientific a. trueb. false