Given: 2C8H18 + 25O2 → 16CO2 + 18H2O
In the combustion of octane, how many grams of oxygen are needed to completely react and produce 84.00 grams of carbon dioxide? Use the periodic table to get the weights of the elements.
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answer: any goods being imported from another country may be subject to issued by the federal government are tariffs

explanation:  

tariffs are a tax on anything that are imported from abroad. government use them to protect and boost their local industries and the thought is that they encourage consumers to buy local instead of importing and they will hope will protect jobs and economy in the country that implements them  

qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. they do not involve measurements or numbers. for instance, colors, shapes, and textures of objects are all qualitative observations.