Untitled document - 2023-11-15T182309

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Sacred Heart University *

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Chemistry

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Nov 24, 2024

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docx

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2) Which of the below statements about global warming is FALSE? A) Some greenhouses gases are needed to keep the proper temperature balance. B) Greenhouse gases prevent heat from leaving the earth. C) Greenhouse gases allow sunlight to reach and heat the earth. D) If the level of greenhouse gases increases, the temperature will decrease. E) none of the above D) If the level of greenhouse gases increases, the temperature will decrease. 3) The primary cause of increasing greenhouse gases is: A) the burning of vast amounts of rain forests. B) the production of CO2 by respiration. C) the increased use of natural gas, petroleum and coal. D) the release of CO2 by decreasing solubility in the ocean. E) none of the above C) the increased use of natural gas, petroleum and coal. 4) Which of the following is TRUE? A) Stoichiometry shows the numerical relationship between chemical quantities in a balanced chemical equation. B) Stoichiometry allows prediction of the amounts of products that form in a chemical reaction based on the amounts of reactants. C) Stoichiometry allows prediction of how much of the reactants are necessary to form a given amount of product. D) All of the above are true. E) None of the above are true. D) All of the above are true. 5) How many waffles can be made from 1 dozen eggs, assuming you have enough of all other ingredients? Given: 2 cups flour + 3 eggs + 1 tbs oil → 4 waffles A) 48 B) 12 C) 4 D) 16 E) not enough information D) 16
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