Need help asap plzzz

What mass of carbon dioxide is produced from the complete combustion of 4.50×10−3 g of methane?

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

Calculate: select the worksheet tab. this tab you calculate the analyte concentration.  fill in the first set of boxes ("moles h2so4" and "moles naoh") based on the coefficients in the balanced equation. (if there is no coefficient, the value is 1.)  record the appropriate volumes in the "ml naoh" and "ml h2so4" boxes.  record the concentration of the titrant in the m naoh box. click calculate. what is the concentration listed