The table below gives the data that is needed to calculate the average atomic mass of element b. isotope atomic mass (amu) relative abundance (%) b-10 10.01 19.91 b-11 11.01 80.09 based on these data, what is the average atomic mass of element b? 10.01 10.51 10.81 11.01

When 13.3 g koh is dissolved in 102.7 g of water in a coffee-cup calorimeter, the temperature rises from 21.4 °c to 31.53 °c. what is the enthalpy change per gram of koh (j/g) dissolved in the water? * take the density of water as 1.00 g/ml. * assume that the solution has a specific heat capacity of 4.18 j/g*k. enter to 1 decimal place. do not forget the appropriate sign /(+). canvas may auto-delete the (+) sign