Chemistry

Hexyne. What does the name of this hydrocarbon tell you about its molecular structure?OA.There are six parent carbon atoms and one triple carbon bond.There are six parent carbon atoms and one double carbon bond.B.C. There are seven parent carbon atoms and one triple bond.D. There are eight parent carbon atoms and all single carbon bonds.E.There are eight parent carbon atoms and one triple bond.
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What is the concentration of a solution in which 10.0 g of AgNO, is dissolved in 450 mL of solution?M
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How many moles are there in 135g of aluminum ?
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the diagram above represents a reflex arc in a human. This pathway responds when someone touches something that causes pain, such as a hot stove. Which of the following shows the correct order of the body systems involved in this response?A) Integumentary, respiratory, digestiveB) Circulatory, respiratory, nervousC) Integumentary, nervous, muscularD) Circulatory, digestive, nervous
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A chemist wants to increase the solubility of a solid in water. Which of thefollowing will NOT help? *-increase the temperature-decrease the particle size-Increase stirring-increase pressure
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Which of the following contains polyatomic ion?OaBeHCOObPCIAg!Mgs
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Adding concentratedsulfuric acid to sugarWhat reaction is this?
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If the cost of electricity is 8 cents/kWh, how much will it cost to use the light for a whole year (365 days)?
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How many grams of iron(III) oxide would be required to make 187 g of iron
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A curved piece of glass or other transparent material that is used to refract light is called a (an) _____. A) mirrorB) lensC) reflectorD) optical fiber
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Representa grficamente con una breve descripcin de los modelos de Bohr correspondientes a los siguientes elementos representativos: Nitrgeno, Sodio, Calcio, Bromo, Nen
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Please help with my chemistry! PLEASE
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Index fossils are found throughout the world and come from organisms which existed during limited periods of geologic time. Which of the following best describes what index fossils can be used to determine? A. the age of a layer of rock B. when an organism first appeared on Earth C. how an organism evolved over time D. the way an organism went extinct
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What is the key building block of living tissue and ecosystems?Hope u can help!
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5. On what organ does alcohol have the most noticeable effect?
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Porosities can have merits and demerits during manufacturing procedures of dental materials. Clarify this statement.
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How do astronomers know about the future collision of Andromeda and the Milky Way?A) All galaxies will collide at some pointB) The two galaxies have collided previouslyC) Astronomers have observed their movements over timeD) The Milky Way has changed course to head toward Andromeda
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Which resulted from the study of chemistry?A) Alchemy to turn base metals into noble metals B) the understanding of earth, air, fire, and water as the basic components of matter. C) discovering the role of oxygen in combustion D) a supernatural, mystical view of the world
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Calculate the pressure using the formula P=1.03+ mass on syringe/area of top of syringe
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Which of the following would form an electrolyte solution?O A. Oil in waterB. Sand in waterC. Sugar in waterD. Salt in water
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18. Which statement best describes the balanced chemical equation?
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If 14 moles of Oxygen burn how many moles of water are created? *2C2H6+7024CO2 + 6 H2OA) 12 mol H20B) 3.5 mol H20C) 3 mol H20D) 42 mol H20
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How many Liters are in 17.3 moles of Iron?
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Which of the following best describes the main function of the nervous system?To deliver nutrients and other essential materials to cells and remove waste productsTo break down the nutrients found in food so that they can be used by all cells in the bodyTo produce the chemical signals that allow parts of the body to communicate over long distancesTo coordinate all other body systems so that they can function together to maintain homeostasis
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