Determine the number of significant figures. a. 6.002 cm b. 0.0020 m c. 10.0500 g d. 7000 kg
e. 7000. Kg

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

How do scientists think that gravity affected the formation of our solar system?

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.