Determine the average atomic mass of the following mixture of isotopes of Uranium: (0.005 %). 234.040947 amu
(0.720 %). 235.043924 amu
(99.275 %). 238.050784 amu

Consider the nuclear equation below. 239 > x + 4 he 94 2 what is x? 1.235 cm 96 2.243 u 92 3.235 u 92 4.243 cm 96

For the reaction shown, calculate how many moles of no2 form when each of the following completely reacts. 2n2o5(g)→4no2(g)+o2(g) part a 1.0 mol n2o5 express your answer using two significant figures. nothing mol m o l request answer part b 5.4 mol n2o5 express your answer using two significant figures.

Exit what is the density of an object having a mass of 5.0 g and a volume of 45.0 cm3?