C2H4(g) + 3O2(g) —> 2CO2(g) + 2H2O(g) change in H1 = ?

The combustion of C2H4 is represented by the equation above.

Use the enthalpies of formation in the table the calculate the value of change in H1 for the reaction.

Of the groups of elements below, which are most likely to gain electrons to become anions? a. alkali metal b. boron group c. halogen d. transition metal

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

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.