1) An example of a compound machine could be a pair of Scissors. Their are two different simple machines in the Scissors which make up the compound machine. Both of them being a Lever, and a Fulcrum.
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Soap is polar because it is not symmetrical in molecularly, this is because it must react with whats on your hand to fully clean it , dish soap is nonpolar/polar in order to combat grease which is also nonpolar, so nonpolar cleans nonpolar and polar cleans polar
The correct answer is 3.4 moles of sulfuric acid (H₂SO₄) are needed to react completely with 6.8 moles of lithium hydroxide.
2LiOH + H₂SO₄ → Li₂SO₄ + 2H₂O
The given chemical equation is balanced.
By using stoichiometry, one can witness the following:
2 moles of LiOH requires 1 mole of H₂SO₄
So, 6.8 moles of LiOH requires (1/2) × 6.8 = 3.4 moles of H₂SO₄
