14. The empirical formula of a certain hydrocarbon is CH2. When 0.125 moles of this
hydrocarbon is completely combusted with excess oxygen, it is observed that 8.40 L of
CO2 gas is produced at STP. What is the molecular formula of the unknown hydrocarbon ?
(a) CH2
(b) C, H,
(c) C, H
(d) C3H6

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

What can be found in the ionosphere

What changes occur in the reaction indicated by the equation? check all that apply. the hydrogen nucleus loses protons. the oxygen nucleus gains protons. the bond in h2 is broken, and new bonds are formed between hydrogen and oxygen atoms. each electron associated with a hydrogen atom is shared with an oxygen atom.