The direction in which the reaction spontaneously proceeds changes as the temperature is increased above a specific temperature. An experiment is to be performed to determine the molecular mass of a volatile liquid by the vapor density method. The equipment shown above is to be used for the experiment. A barometer is also available. Explain your reasoning.
Experimental data provide the basis for interpreting differences in properties of substances.
Account for the differences in properties given in Tables 1 and 2 above in terms of the differences in structure and bonding in each of the following pairs. Nuclear fusion requires large amounts of energy to get started, whereas nuclear fission can occur spontaneously, although both processes release energy. Copyright 1991 by College Entrance Examination Board and Educational Testing Service. All rights reserved.