Master Chemistry with Fun Quizzes & Brain Teasers!

PLEASE HELP ASAPPlease help!!
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HELP ITS DUE TOMORROW
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Which of the following BEST describes one of the main functions of proteins?
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HELPPP PLEASEEE!!! calculate the energy of radiation with a wavelength of 432 nm
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Which has a higher electronegativity phosphorus or sodium
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HELP ITS DUE TOMORROW
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Observe the nature changing around your home. You can observe plants, animals, and parts of your actual home as you begin to notice changes in matter. Collect data for two examples of changes in matter. Use the Changes in Matter observation questions to determine if your examples are physical or chemical changes.Your answer should include two examples, the types of changes observed, and evidence of how the examples were formed. You can use this format:Example 1:Type of Change:Evidence:
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Explain why warm air temperature has lower air pressure than cold air?
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One hundred students were surveyed about who they would vote for. What isthe best way to display the results? Explain your answer.
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An atom has a mass number of 43 and anatomic number of 23. How many protonsdoes it have?
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Which are characteristics of all living things?
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Which of the following has a higher electronegativity oxygen or selenium?
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An atom has a mass number of 43 and anatomic number of 23. How many protonsdoes it have?
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Which of the following has a higher electronegativity oxygen or selenium?
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Lamark goes to a bowling alley to test his belief that rolling a bowling ball slowly will result in knocking down more pins. He gently rolls his bowling ball towards the bowling pins lined up at the end of the lane. The bowling ball stops in the middle of the lane without striking the pins. Which statement below best explains what happened?
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If an object is accelerating the forces acting on the object are ?
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Which of the following has a higher electronegativity oxygen or selenium?
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The pressure caused by a sample of gas is 2.25 atm. 1 atm isequal to 1.01 kPa. What is the pressure in Newton per squarecentimeter?
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PLZ HELP ME!!!!!!!!!!!!!!!
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A scientist is using a microscope to observe a type of (prokaryote) bacteria. Which 2 structures would the scientist most likely see?Group of answer choicesDNA and cell wallgolgi body and vacuoleendoplasmic reticulum and DNAvacuole and nucleus
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Which of the following best describes the structure of a protein? aCarbon ring(s) bHydrocarbon(s) cSingle or double helix dGlobular or fibrous
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what type of reaction is CuO + H2SO4 CuSO4 + H2O
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Sulfur is often found in nature as an element, not combined with other elements in a compound. What doesthis fact tell you about the reactivity of sulfur?
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14. How do you describe an atom in which the number of protons is equalto the number of electrons?
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