HELP ASAP, IT'S TIMED What is the total mass of products formed when 16 grams of CH4 is burned with excess oxygen? (At. Masses: C=12,H=1,O=16)CH4 + 2O2 → CO2 + 2H2 O
Select one:
a. 80 grams
b. 36 grams
c. 62 grams
d. 44 grams

Which real-world scenarios below represent physical and chemical changes? -running a car -exploding fireworks -mixing water and powdered drink mix -combining oil and vinegar to make salad dressing -taking aspirin for a headache -diluting bleach with water-digesting dinner-spreading peanut butter on bread

Explain why scientists use shared characteristics to make cladograms.

If you burn 10 kilograms of wood in a fire (combustion) what is the weight of the products after the fire has finished burning the wood?