What is the empirical formula of a substance with the molecular formula Se8F12?

Se2F3
Se4F4
SeF
Se8F12

In a spacecraft, the following reaction occurs: co2(g) + 2lioh(s) -> lico3(s) + h2o(i) (i attached picture of equation) how many liters of carbon dioxide will 4 moles of lithium hydroxide (lioh) absorb? (one mole of any gads occupies 22.4 l under certain conditions of temperature and pressure. assume those conditions for this equation.) 45l 6.0l 3.0l 34l

How have the greenhouse gasses increased from the year 2000 to 2018

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %