Chemistry

1.__________ are the most organized state of matter. Solids Liquids Gases2.States of matter change when ________ is added or removed. Plasma Energy3.Which state of matter has the most movement of its particles? Solid LiquidGas
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Stabilii numerele de oxidare ale tuturor elementelor prezente n urmtoarele substane chimice, innd cont de principalele reguli de stabilire a NO: NaNO3 AlPO4 CaCO3 KMnO4 K2Cr2O7 HClO4 (acid percloric) HClO3 (acid cloric) HClO2 (acid cloros) HClO (acid hipocloros)
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What is the molariity of a 50.0 mL aqueous solution containing 10.0 grams of copper (II) sulfate, CuSO4?
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if a sample of gas at 25.2 c has a volume of 536mL at 637 torr, what will its volume be if the pressure is increased to 712 torr?
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True or False? The Grand Canyon was probably formed through wind abrasion.
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Why is soap mixed with water?O A. The soap turns the water molecules into a nonpolar solvent.B. It covalently bonds to the water so it can be washed away.O C. Its polar end mixes with the water so it can be washed away.D. The soap becomes chemically active when mixed with water.
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Convert 4.6 atm to mmHg.
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How do you calculate the number of protons, neutrons, and electrons in an element?
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The only thing that makes one kind of light different from another is its ____? A) frequency B) colorC) wavelength D) temperature
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Which of these pairs would form an ionic bond?
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10. You can protect yourself from radiation bygoing up to a higher elevationincreasing the time you are exposedincreasing your water intakegetting further away from the radiation source
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3 hazards that occur in teaching and learning of science
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I'll give you 100 pointsWhich are evidence of seafloor spreading? Select three options. A.molten material B.magnetic stripes C.continent material D.drilled core samples E.ocean water samples
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Question 13: Consider the strength of the H absorption line in the spectra of stars of various surface temperatures. This is the amount of light that is missing from the spectra because Hydrogen electrons have absorbed the photons and jumped from level 2 to level 4. How do you think the strength of H absorption varies with stellar surface temperature?
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What mass in grams of hydrogen is produced by the reaction of 2.0 g of magnesium? (Make sure to balance the reaction first)Mg(s) + H2O(1) --> Mg(OH)2(s) + H2 (8)
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Which term describes this reaction?A- additionB- condensationC- eliminationD- substitution
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HELPPP ASAPPPP PLEASEEEEEEEEEEEEEEEEEEDetermine the mass of hydrogen in a 2.5 sample of ammonia show work using dimensional analysis
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What is science? Answer for brainilest
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PLZZZ HELP CHEM!!!!!!! Easy points!!!!!
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If I add 50 mls of water to 300 mls of 0.6M KNO3 solution, what will be the molarity of the diluted solution?
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Help me!what is the biggest disadvantage of using nuclear power to produce electricity?a. nuclear fission releases more air pollution than burning coalb. nuclear fission produces less energy than burning coal or oil.c. nuclear waste must be safely stored for many yearsd. nuclear waste must be incinerated
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The combustion of 0.1240 kg of propane in the presence of excess oxygen produces 0.3110 kg of carbon dioxide. What is the limiting reactant? PLEASE I REALLY NEED HELP!!!!
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An insoluble solid has a mass of 80.0 g . It is placed in a graduated cylinder containing 40.0 mL which then rises to 80.0 mL. What is the density of the solid? a(A) 0.300 g/mL b(B) 0.50 g/mL c(C) 2.00 g/mL d(D) 3.33 g/mL
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What is the name for a star that has two shells of hydrogen and helium undergoing fusion?A.asymptotic giant branch starB.supergiantC.hypergiantD.supernova
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