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Use LeChatelier’s principle to explain why the concentration of NO at equilibrium increases when the reaction takes place at higher temperatures
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Rubidium ignites spontaneously when exposed to oxygen to form rubidium oxide, Rb2O. Rubidium exists as two isotopes: 8537Rb (84.91 u) and 8737Rb (86.91 u). If the average atomic mass of rubidium is 85
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The activation energy for the reaction NO2(g)+CO(g)⟶NO(g)+CO2(g) is Ea = 375 kJ/mol and the change in enthalpy for the reaction is ΔH = -250 kJ/mol . What is the activation energy for the reverse r
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THE VALUE OF K FOR H2 CO2----H2O CO IS 1.80 AT 1000C IF 1.0MOLE OF EACH H2 AND CO2 ARE PLACED IN 1 LITRE FLASK THE FINAL EQUILIBRIUM CONCENTRATION OF CO AT 1000C WILL BE A)0.295M B)0.385M C)0.531M D)0
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In limonene, the major volatile compound in orange peel oil, how many carbon atoms are in the sp3 hybridization state
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THE VALUE OF K FOR H2 + CO2<---->H2O + CO IS 1.80 AT 1000C IF 1.0MOLE OF EACH H2 AND CO2 ARE PLACED IN 1 LITRE FLASK THE FINAL EQUILIBRIUM CONCENTRATION OF CO AT 1000C WILL BE A)0.239M B)0.385M C)0.53
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THE VALUE OF K FOR H2 + CO2<---->H2O + CO IS 1.80 AT 1000C IF 1.0MOLE OF EACH H2 AND CO2 ARE PLACED IN 1 LITRE FLASK THE FINAL EQUILIBRIUM CONCENTRATION OF CO AT 1000C WILL BE A)0.239M B)0.385M C)0.5
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Consider the reaction, 2 d(g) + 3 e(g) + f(g) => 2 g(g) + h(g) when e is decreasing at 0.68 mol/ls, how quickly is f decreasing? give your answer to 3 decimal places.
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A cube of iron (Cp = 0.450 J/g•°C) with a mass of 55.8 g is heated from 25.0°C to 49.0°C. How much heat is required for this process? Round your answer to three significant figures.
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State the evidence that makes it necessary to use more than one property to identify the substance given to the technician
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When electrons are in unstable State they will quickly returned to their lower energy level when this happens energy is released what conditions are the electrons in before his energy is released
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If the matter is uniform throughout and cannot be separated into other substances by physical processes, but can be decomposed into other substances by chemical processes, it is called an (an)--------
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PLEASE HELP ASAP BABES!! (19 points and brainliest for correct answers) (5 questions) The first step in the scientifc method, is to ask a question or A) state the problem. B) state the conclusion. C
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An object 5 millimeters high is located 15 millimeters in front of a plane mirror. How far from the mirror is the image located?
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Scale Mineral 10 diamond 9 corundum 8 topaz 7 quartz 6 feldspar 5 apatite 4 fluorite 3 calcite 2 gypsum 1 talc Talc scratches calcite. Quartz scratches corundum. Fluorite scratches feldspar. Topaz scr
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Scientific description about the pizza dough doubles its size when it is placed in a warm place . how does this happen
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How many grams of iron metal do you expect to be produced when 245 grams of an 80.5 percent by mass iron (II) nitrate solution react with excess aluminum metal? Show all of the work needed to solve th
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Yeast converts glucose (c6h12o6) into ethanol (d = 0.789 g/ml) in a process called fermentation. an unbalanced equation for the reaction can be written as follows:
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What is the maximum mass of ethyl alcohol you could boil with 1000 j of heat, starting from 21 ∘c?
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The 1h nmr spectrum below corresponds to an unknown compound with the molecular formula c6h10. there are no strong ir bands between 2100 and 2300 or 3250 and 3350 cm-1. deduce and draw the structure o
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Five different substances are given to you to be dissolved in water. which substances are most likely to undergo dissolution in water? check all that apply. view available hint(s) check all that apply
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A lethal dose of a specific drug taken orally is 1.5 mg/kg of body weight. calculate the lethal dose of the drug taken orally by a 165 lb person
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Which statement explains the fact that sediments on earth surface often differ in composition from the local bedrock
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2C6H5COOH + 15O2 → 14CO2 + 6H2O which of the following options gives the correct product:product ratio?
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Describe the sequence of adding ingredients to make the recipe for condensed tomato soup. To mix the ingredients, you have an industrial-sized vat with a capacity of 800 L. You also have the ability t
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How much Reagant excess remains unreached when 0.3500 grams Cu and 1.0 mL 15.6 HO3 or mixed together?
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A diels–alder reaction of 2,5-dimethylfuran and maleic anhydride gives a compound a that undergoes acid-catalyzed dehydration to give 3,6-dimethylphthalic anhydride.
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Calculate the number of moles of water formed when you use all available oxygen (92 mol ). Express your answer with the appropriate units.
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In a _______ mixture, the ingredients are distributed evenly throughout the mixture, while in a _______ mixture, the ingredients are unevenly distributed throughout.
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Which is most responsible for guiding the movement of different air masses across the US? A. the oceans B. trade winds C. The jet stream D. easterly winds
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HELP!! WILL GIVE BRAINIEST Electromagnetic Spectrum Activity For this activity, you will be sharing the types of electromagnetic energy you use every day. Your task is to choose three activities in yo
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Aluminum nitrate and sodium hydroxide produces aluminum hydroxide and sodium nitrateWhat is the balanced equation and reaction type
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What is the molality of a solution in which 13.7 grams of NaCl have been dissolved in 500 grams of water?
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How many grams of glucose (C6H12O6) would have to be added to 500 grams of water to get the water to boil at 101°C?
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The solubility of nitrogen gas at 25°c and a nitrogen pressure of 522 mmhg is 4.7 à 10â4 mol/l. what is the value of the henry's law constant in mol/l·atm?
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If you had excess chlorine, how many moles of of aluminum chloride could be produced from 26.0 g of aluminum?
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Consider the reaction cacn2 + 3 h2o â caco3 + 2 nh3 . how much caco3 is produced if 47.5 moles nh3 are produced? 1. 2380 g 2. 23.8 g 3. 0.238 g 4. 9500 g 5. 4750 g 6. 0.950 g
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A 0.0000865 m sample of compound x in a solvent has an absorbance of 0.234 at 528 nm in a 1.000-cm cuvet. the solvent alone has an absorbance of 0.051. what is the molar absorptivity of compound x?
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Describe why you sometimes need parentheses around a polyatomic ion when used in a formula. Give one example of when you need parentheses and one where you don't
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You want to prepare 50cm of 0.1m NaoH from exactly 50% (wt/wt) NaoH solution. what volume of the 50% solution is required
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How do sodium and potassium ions transfer in and out of an axon? A.Through “gates” that open up B.Through an absorption process C.Through neural communication D.Through an electrical process
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Hedea made a study chart about nuclear energy. Which best describes the error in Hedea’s chart? The nuclei of atoms are split apart in both fission and fusion. The nuclei of atoms are joined togethe
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For the complete combustion of 5.6dm3 of a gaseuos hydrocarbon CxHy. 28.0dm3 of oxygen gas were used, 16.8dm3 of CO2 gas and 18.0gof liquid water were produced all gases measurement were made at stp.
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What molality of a nonvolatile, nonelectrolyte solute is needed to raise the boiling point of water by 8.00°C (Kb = 0.520°C/m)?
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In the Beer-Lambert Law equation, what does the “b” represent? Concentration Absorption y-intercept Buoyancy Thickness of solution
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ENV 3 ESSAY # 1 Name:____________________Your essays should be about 1000 words, in 12 font and double-spaced. This means you should devote a good paragraph or more to each part. Include the word
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A sip of wine is about 2.0mL. If a bottle of laffite Rothschild cost $278 and contain 24.5fl.oz, how much does just 1 sip cost? 1 fl.oz = 29.6ml
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The process that changes a solid directly into a gas is called sublimation. A solid that begins with a mass of 450 g will sublime to give off a gas with a mass of _______ g.
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Using the fact that the molar mass of helium is 4.00 10-3 kg/mol, determine the rms speed of the helium atoms in the example.
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Fundamentally, how are ΔHrxnand ΔHfdifferent?Which part of the experiment demonstrated the change inenthalpy per mole of a reaction?
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