Investigating a fire scene, you determine several places where fires started. what might you guess about the cause of the fire? a. it was an electrical fire b. it was deliberately set c. an accelerant was used d. it was an accident

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

What is the percentage of hydrogen in c2h4

One nanometer is equal to how many meters?