When 118.13 grams of CO2 are produced, 48.382 grams of CH4 were reacted. What is the percent yield of this reaction?
CH4 + 2 02 → CO2 + 2 H2O

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?

Sodium nitrite (nano2) reacted with 2−iodooctane to give a mixture of two constitutionally isomeric compounds of molecular formula c8h17no2 in a combined yield of 88%. draw reasonable structures for these two isomers. click the "draw structure" button to launch the drawing utility. place the two compounds in the appropriate boxes below.

Element before carbon on the periodic table