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(F) Geography Pre- Assessment
How many continents are found on Earth?
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How many continents are found in the world ?

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons

What does a numerical subscript following an element in a chemical formula mean?

Butane gas reacts with oxygen gas to give carbon dioxide gas and water vapor (gas). if you mix butane and oxygen in the correct stoichiometric ratio, and if the total pressure of the mixture is 390 mmhg, what is the pressure (in mmhg) of water vapor after the reaction is completed (temperature and volume do not change).