The heat of vaporization of a liquid is 1344 J/g. What is the number of joules needed to change 40 g of liquid to vapor at the boiling point? A. 33.6
B. 53760
C. 90400
D. 224717

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

Calculate: select the worksheet tab. this tab you calculate the analyte concentration.  fill in the first set of boxes ("moles h2so4" and "moles naoh") based on the coefficients in the balanced equation. (if there is no coefficient, the value is 1.)  record the appropriate volumes in the "ml naoh" and "ml h2so4" boxes.  record the concentration of the titrant in the m naoh box. click calculate. what is the concentration listed

The number at the end of an isotope’s name is the number.