Chemistry

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CHCHCOCH how many atoms of each element are in one molecule of 2-heptanone
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In which two ways can the timber industry help prevent loss of forest cover and animal habitats?
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An aqueous solution of HNO2 is poured onto a solid pile of SrCO3. Identify the net ionic equation for this reaction.A) SrCO3(s) + 2 HNO2(aq) Sr(NO2)2(aq) + HCO3(aq)B) no reaction occurs C) Sr2+ + CO32- + 2 H+ Sr2+ + H2O + CO2(g)D) SrCO3(s) + 2 HNO2(aq) Sr(NO2)2 + H2O + CO2(g)E) SrCO3(s) + 2 H+ Sr2+ + H2O + CO2(g)
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The mole concept will most likely be used incalculating the average height of a mountain range.measuring how many liters of gasoline are poured into a tank.determining how many ozone molecules are lost in the atmosphere.finding the mass of a piece of steak in a butcher shop.
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How does activation energy affect the progress of a reaction?O A. The reaction will not occur unless the activation energy is met.B. The activation energy decreases the energy needed for a reactionto progress.C. The activation energy increases how quickly the reaction willprogress.D. The activation energy determines equilibrium concentrations ofproducts.
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Explain the different principles that allow roller coasters to rip and roar around the tracks. In your response, include how energy is transferred back and forth between kinetic and potential.
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2Next Physical Changes Versus Chemical Changes: Mastery TestSubmit Test2Select the correct answer.The metal wire in an incandescent lightbulb glows when the light is switched on and stops glowing when it is switched off. This simple process iswhich kind of a change? a physical changeB. a chemical changeca nuclear changeOD. an lonic change
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Discuss the relationship between the structure of hydrocarbons and their properties of polarity and solubility. How does this compare to water?
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State whether the following is an example of a physical or chemical change:! 21. Burning a log: ________________________________! 22. Folding a piece of paper: _________________________! 23. Freezing water: _________________________! 24. Bending a copper wire. _________________________!
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I WILL GIVE BRAINLIEST PLEASE HELPHow many moles of NH are needed to react in order to form 660. g (NH)SO according to the following balanced equation: 2 NH + HSO --> (NH)SO *
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Of these four liquids, which has the lowest viscosity? options: A. Pancake syrup at room temperature B. Motor oil that is in the refrigerator C.Liquid mercury at room temperature D. A glass of lemonade at room temperature
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2. What happens to the pH when you add more H+ ions to a solution that has no buffers?
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With your bare feet, stand with one foot on a rug, and the other foot on a tile, linoleum, or wood floor. Which one feels colder? Which one is really colder?
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The volume of an air bubble at the bottom of a lake is 1.35 mL. If the pressure at the bottom of the lake is 125 kPa and the air pressure at the top of the lake is 105 kPa, what will the volume of the bubble be when it rises to the surface?
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True or false a surface wave moves the medium in the same direction as the wave travels
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A plant was placed in the corner of a room away from a window. What might you observe about the plant after five days? Select one: The plant is leaning toward the window. The plant is not affected by the light in the window. The plant is standing straight up from the pot. The plant is leaning away from the window.A plant was placed in the corner of a room away from a window. What might you observe about the plant after five days? Select one: The plant is leaning toward the window. The plant is not affected by the light in the window. The plant is standing straight up from the pot. The plant is leaning away from the window.
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Please help! BRAINLIEST to correct answer!!!!
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Match the parts of the scenario to the components of developing scientific knowledge
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How much faster will Xenon escape out and opening than carbon dioxide gas?
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1. After clamping a buret to a ring stand, you notice that the set-up is tippy and unstable. What should you do to stabilize the set-up?A. Move the buret clamp to a ring stand with a larger base.B. Hold the buret in place by hand during the titration.C. Use a different size buret that is more stable in the set-upD. Clamp another buret to the ring stand to balance out the set-up.
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Frosted glass and wax paper are ____. A) transparent B) translucent C) clearD) opaque
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new evidence can lead to a change in scientific knowlodge true or false
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Plants remove carbon to the atmosphere during
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