Based on the methods used in the video, answer the following gram to gram conversion question: 2 C2H6 + 7 O2 > 4 CO2 + 6 H2O

In the combustion of ethane (C2H6), 4.12 grams of water (H2O) was produced. How much ethane (C2H6), in grams, was used in this reaction?

molar mass H2O= 18.02 g/mol

molar mass C2H6= 30.08 g/mol

2.47 g C2H6

2.29 g C2H6

20.63 g C2H6

20.97 g C2H6

B

Explanation:

- "the choice that is not an indicator of a chemical change is "state of matter changes". more common than not, chemical reactions produce energy in the form of light or heat. along with energy, they also produce a new substance called the product that could be in any state of matter (solid, gas, or liquid)."

each  column  of the  table  is called a group. elements in a group share similar properties. groups are  read  from  top  to  bottom. metal. metalloid. nonmetal. solid. liquid. gas. fe. hg. o.  2. 3. 4. 5. 6. 7. 8. 9.  2. beryllium. 9.012. 4.  sodium. 22.990.  11. 3.  magnesium. 24.305.  12.  potassium. 39.098.  19. 4.  calcium. 40.078.  20. i guess  i