If the burner doesn't light after several strikes, turn the gas off at the source. Verify that you are generating sparks when striking the striker, and check that the barrel is all the way down and the needle valve is open by the specified amount. If these check out, the problem may be insufficient gas flow.
Compounds that are gases at room temperature are covalent bonds (nonmetal + nonmetal).
Answer:
12.5??
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Answer: The concentration for pH is 4 but, for pOH it is 10.
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