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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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How much heat must be added to 0.45 kg of aluminum to change it from a solid at 130 8c to a liquid at 660 8c (its melting point)? the latent heat of fusion for aluminum is 4.0 3 10 5 j/kg?
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Determine the concentrations of k2so4, k , and so42– in a solution prepared by dissolving 2.77 × 10–4 g k2so4 in 1.50 l of water. express all three concentrations in molarity. additionally, expre
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Calculate the percent ionization of a 0.75 molar solution of acetic acid. the ionization constant of acetic acid is 1.8 × 10−5 .
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A system gains 752 kj of heat, resulting in a change in internal energy of the system equal to 196 kj. how much work is done?
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94 a 3.27 3 m tank contains 100kg of nitrogen at 175k. determine the pressure in the tank, using (a) the ideal-gas equation,
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Experimental Procedure, Part A.1. For preparing a set of standard solutions of FeNCS2, the equilibrium molar concentration of FeNCS2 is assumed to equal the initial molar concentration of the SCN in t
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The bond energy for C -Cl is 397 Kj/mol and for C-Br is 280Kj/mol. Which bond length do you predict would be the shortest
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1.How many alleles are used to represent a particular trait? 2.Widow’s peak is a dominant trait and is represented with a capital “W”. Straight hairline is a recessive trait and is represented
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A tire has a pressure of 325 kPa at 10°C. If the temperature of the tire rises to 50°C and the volume remains constant, what is the new pressure? ( Hint:°C + 273 = K.)
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Pls, help Which process turns glucose into energy? Breathing Cell division Cellular respiration Photosynthesis
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What needs to happen for the equation CH4 + O2 CO2 + H2O to be balanced? A. Nothing, the equation is already balanced. B. A coefficient of 2 must be added before both products and reactants. C. A coef
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What is a sample statistic? a correct: your answer is correct. descriptive measure of a correct: your answer is correct. . give examples. (select all that apply.) demo?
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Consider the reaction 4PH3(g) → P4(g) + 6H2(g) Suppose that, at a particular moment during the reaction, molecular hydrogen is being formed at rate of 0.240 M/s. (a) At what rate is P4 changing? M/s
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What mass, in grams, of fluorine gas (F2) is contained in a 8.3-liter tank at 29.8 degrees Celsius and 1.23 atmospheres? Show all of the work used to solve this problem.
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When two atoms of different elements come in contact, heat is given off and light is produced. Which of the following does this support?
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Profe Dejanras Ayuda Ejercicio de química Ayuda por favor con procedimiento y solución. Bendiciones
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By adding a tablespoon of salt to gatorade, does it change it to a hypotonic, isotonic ,or hypertonic solution.
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In this experiment, 1.0 ml of saturated sodium chloride is used to rinse the hickman head after the initial distillation. why is saturated sodium chloride, rather than pure water, used for this proced
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A 3.228 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis and 8.349 grams of CO2 and 1.709 grams of H2O are produced. In a separate experiment, the molar mas
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A gas has an initial volume of 454 mL at 103 ºC and a final volume of 234 mL. What is its final temperature in degrees Celsius?
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A 0.477 mol sample of O2 gas has a volume of 12.1 L at a certain temperature and pressure. If all this O2 were converted to ozone (O3 ) at the same temperature and pressure, what is the ozo
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What is the relationship between variable x and variable y? As variable x increases, variable y increases. As variable x increases, variable y decreases. Both variables show a trend toward decreasing
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How do we solve ths: a mixture consists of feso4 and fe2(so4)3. A 0.1223g sample of this mixture was dissolved in water and titrated with a 0.00420 M KMnO4 solution. The titration required 18.85 ml of
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how can I use the absorption and wavelength spectrums of copper and brass to show that there are other elements besided copper in a brass sample
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What would be the resulting molarity of a solution made by dissolving 31.3 grams of Ca(OH)2 in enough water to make a 1059 milliliter solution
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If the solubility of gas us 7.5 lg/l at 404 up a what is the solubility of gas when the pressure is 202kpa
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Consider the hydrocarbon below. H H \ / C===C / \ H H What is the name of this hydrocarbon? propene pentene butene ethene
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