Answer: It’s true
Explanation:
Solar energy will not run out (unless the sun burns out), but the supply of fossil fuels we use is slowly depleting. Burning fossil fuel also releases greenhouse gas into the air, which is bad for the atmosphere.
Why hello there!
The correct answer to your question is C because exothermic energy is based of on using heat and heat acts like the activation !
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Answer: A. It contains three times as many hydrogen atoms as carbon atoms.
Explanation: Empirical formula is the formula which shows the atoms of the elements in the simplest ratio of atoms whereas molecular formula show the actual number of atoms.
Thus if a compound has an empirical formula of , it means there are thrice number of hydrogen atoms as carbon atoms.
The molecular formula could be written as . Thus if number of carbon atoms are n, the number of hydrogen atoms are 2n.
If you were referring to the law of conservation of mass when a gas is produced it is difficult to prove that because it would be virtually impossible to measure the mass of gas in a container as it would probably be similar and density the air