Calculate the energy needed to melt 3.6 g of ice at 0°C. The molar heat of fusion for ice at 0°C is 6.02 kJ/mol. 1.2 kJ
30 kJ
2.2 kJ
20 kJ
0.6 kJ

What is the composition, in atom percent, of an alloy that consists of 4.5 wt% pb and 95.5 wt% sn? the atomic weights for pb and sn are 207.19 g/mol and 118.71 g/mol, respectively.(a) 2.6 at% pb and 97.4 at% sn(b) 7.6 at% pb and 92.4 at% sn(c)97.4 at% pb and 2.6 at% sn(d) 92.4 at% pb and 7.6 at% sn

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change

What effect does a decrease in temperature have on the overall rate of a chemical reaction? a decrease in temperature decreases . the reaction rate will