What is the binding energy of one mole of 23490 Th if the mass defect is 1.908 gmol?

To calculate the binding energy of one mole of (^{234}{90}\text{Th}) using the mass defect, you can use Einstein's equation (E=mc^2). First, convert the mass defect from grams to kilograms (1.908 g = 0.001908 kg). Then, using the speed of light (c \approx 3 \times 10^8 , \text{m/s}), the binding energy can be calculated as (E = 0.001908 , \text{kg} \times (3 \times 10^8 , \text{m/s})^2), which results in approximately (1.71 \times 10^{15} , \text{J}) for one mole of (^{234}{90}\text{Th}).