The atomic masses of 79 br 35 (50.69 percent) and 81 br 35 (49.31 percent) are 78.9183361 amu and 80.916289 amu, respectively. calculate the average atomic mass of bromine. the percentages in parentheses denote the relative abundances.

In a sample of oxygen gas at room temperature, the average kinetic energy of all the balls stays constant. which postulate of kinetic molecular theory best explains how this is possible? a. attractive forces between gas particles are negligible because the particles of an ideal gas are moving so quickly. b. collisions between gas particles are elastic; there is no net gain or loss of kinetic energy. c. gases consist of a large number of small particles, with a lot of space between the particles. d. gas particles are in constant, random motion, and higher kinetic energy means faster movement.

Five different substances are given to you to be dissolved in water. which substances are most likely to undergo dissolution in water? check all that apply. view available hint(s) check all that apply. sodium fluoride, naf octane, c8h18 propanol, ch3ch2ch2oh potassium iodide, ki benzene, c6h6

What is calcium oxide+diphosphorus pentoxide--> calcium phosphate balanced