Which statement describes the transfer of heat energy that occurs when an ice cube is added to an insulated container with 100 milliliters of
water at 25°c?
(1) both the ice cube and the water lose heat energy.
(2) both the ice cube and the water gain heat energy.
(3) the ice cube gains heat energy and the water loses heat energy.
(4) the ice cube loses heat energy and the water gains heat energy.

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false

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.

Which tool is least in predicting weather