Calculate AH for the reaction: C2H4 (g) + H2 (g) - CH. (g), from the following data.
a.
CzH. (g) + 3 O2 (g) →
-
2 CO2 (g) + 2 H2O (1)
AH = -1411. kJ
b.
C2H. (g) + 3% O2 (g)
- 2 CO2 (g) + 3 H20 (1)
AH = -1560. kJ
c.
H2 (g) + 12 02 (g)
H2O (1)
AH = -285.8 kJ

When determining the shape of a molecule, it is important to draw a lewis dot structure first in order to see the total number a. electrons within the moleculeb. bonding and unshared pairs around central atomc. unshared pair within the molecule( i really need it )

You have 125g of a certain seasoning and are told that it contains 76.0 g of salt what is the percentage of salt by mass in this seasoning

Remember to use the proper number of significant figures and leading zeros in all calculations.gelatin has a density of 1.27 g/cm³. if you have a blob of gelatin dessert that fills a 2.0 liter bottle, what is its mass? 2540 g2500 g3.9 x 10-43.937x 10-4