The density of tin is 7.31 g/cm? What is the mass of the sample pictured below? 2.5 cm
1.2 cm
*5.50 cm

Smog is the term used to describe the combination of fog and smoke

For the reaction shown, calculate how many moles of no2 form when each of the following completely reacts. 2n2o5(g)→4no2(g)+o2(g) part a 1.0 mol n2o5 express your answer using two significant figures. nothing mol m o l request answer part b 5.4 mol n2o5 express your answer using two significant figures.

Which radioisotope is used to date fossils? a. oxygen-16 b. carbon-14 c. uranium-238 d. carbon-12