Please help fast i will be so happy please 1. Explain why smokeless tobacco causes more oral cancer than smoking:

2. Why doesn't smokeless tobacco have tar and carbon monoxide in it?

There are 6.022, 104 atoms of hg in 1 mole of hg the number of atoms in 45 moles of hg can be found by multiplying 4.5 by 6.022, 102 which is the number of atoms in 4.5 moles of hg, correctly written in scientific notation with the correct number of significant figures? 0 21,109 0 21,100 271, 1024 27.099, 100 mark this and retum save and exit submit

Calculate - analysis of compound composed of iron and oxygen yields 174.86 of fe and 75.14g of o. what is the empirical formula for this compound?

The equation picture below shows which type of nuclear reaction u 235 + n x e 134 + sr 100 + 2n