Chemistry

what 3 classes of compounds are elecrolytes
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what is an example of a strong base? HClNaClNaOHHF
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What is the formula of a potassium ion?
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1 pointIf the pressure in a cylinder is 1 atm and the volume is 0.725 liters, thenwhat is the pressure when the volume is decreased to .075 liters (atconstant temperature)? *2.5 atm5 atm5 atm9.7 atmO13.2 atm
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PLEASE HELP!how can nuclear fission be made to happen?a. atoms are hit with neutronsb. atoms are hit with x raysc. atoms are hit with lightd. atoms are hit with gases
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the radioactive atom 61/27 co emits a beta particle. write an equation showing the decay
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an _____ bond forms when one element give electrons to another element - one becomes a positive ions and the other a negative ion. covalent metallicionic
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Which factor would slow down a chemical reaction? (Choose all that apply)A)Adding an inhibitorB)Decreasing temperatureC)Decreasing particle sizeD)Increasing particle size
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I need the answers to this question please The options are A.0.17g/cm^3B.5.38g/cm^3C.0.05g/cm^3D.8g/cm^3
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what is the correct formula for the compound platinum (vi) flouride?
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A 125 g sample of strontium was heated from 0C to 20C. It absorbed 750 J of energy. What is the specific heat capacity of iron?
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Explain in your own words, why cant we predict earthquakes?
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HELPPPP PLEASEEEE NAME THESE MOLECULES PLEASEEE
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Which two substances are reactants in the chemical reactions of cellularrespiration?I A. Carbon dioxideB. WaterC. SugarD. Oxygen
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If we start with 1.000g of strontium 90 0.953 grams will remain after 2.0 years (a) what is the half life of strontium 90 (b) how much strontium 90 will remain after 5.00 years Please show the necessary step
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how did buddhism spread to china?
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Which of the following presents a safety hazard while working in the science laboratory?A knowing how to use equipmentB wearing safety gogglesC following directionsD working alone
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What structure in a bacterial cell controls which substances enter and leave the cell?
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In general, when a substance changes from a solid to a liquid, A. the density of the substance increases. B. the substance no longer has density since density is a property only solids have. C. the density of the substance decreases. D. the density of the substance remains the same.
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Three identical bottles of soda are used in an experiment. One of the bottles is left at room temperature, another is cooled, and another is heated. Next, the bottles are opened and balloons are placed on top to capture the escaping gas. The temperatures and results are shown.
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Calculate the molarity of a KCl solution if 37.3 g of KCl are dissolved in water to give afinal solution volume of 500 ml.
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A plastic bag has a volume of 22.3 L at a pressure of 99.5 kPa. If you climb a mountain and the bag expands to a volume of 22.9 L, what is the air pressure at the top of the mountain?
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If the following weights have masses of 2, 4, 6 and 8 kg,respectively, and they are at the same temperature, which onewill transfer more heat if they are all placed in cold water tocool down? Explain.Unit is calorimetry
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A container is filled with 10 mol of gas and the pressure (Pi) is measured. If 5 mol are removed, what is the new pressure (Pf)?
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