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1. An acid has a pH of 4. Another acid has a pH of 5. How do the two pH values compare? * A. A pH of 4 is 10 times less acidic than a pH of 5 B. A pH of 4 is 10 times more acidic than a pH of 5 C. A
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This graph shows the energy changes during the progress of a reaction involving two molecules. Explain what is happening or what the state of the reaction is at A, B, C, and D. Is this an exothermic o
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In order for one type of atom to substitute for another in a solid solution, the substituting atom must be: (Select all that apply.) the same element identical in size similar in size from the same pe
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Find the volume of 19.5 g of CCl4 at 972 torr and 29.0oC.
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Review the six economic goals discussed in this section. Then, in a paragraph of at least five sentences, describe the goal you feel is the most important to a country and explain why you feel this wa
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Assume that 13.5 g solid aluminum (Al) react with HCl to produce solid aluminum chloride (AlCl3) salt and gaseous hydrogen (H2) at standard temperature and pressure. How many moles of Al react? mol Ho
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BRAINLIEST AND 5 POINTS! Heat from a fire warming your hands Radiation Convection Conduction Warm air rising from the pavement Radiation Convection Conduction An oven that cooks by cycle warm air thr
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Imagine you have a saturated solution of ca(oh)2, at equilibrium, that has some undissolved ca(oh)2 solid on the bottom of the test tube. if you add an additional scoop of solid ca(oh)2 to this soluti
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In many cases of fischer esterification, the carboxylic acid is the more "valuable" piece and the alcohol is used in excess (as solvent). let's say you are making the ethyl ester of an acid and use th
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A mixture of methane gas, ch4(g), and propane gas, c3h8(g), has a pressure of 0.5997 atm when placed in a sealed container. the complete combustion of the mixture to carbon dioxide gas, co2(g), and wa
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Please use the below reaction to answer this question. N2 + 3H2 -> 2NH3 How many liters of nitrogen gas will I need to produce 65.4 liters of NH3 at STP? 65.4 liters N2 32.7 liters N2 75.4 liters N2 2
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Find the average atomic mass of neon, given the atomic masses and relative abundance of its three isotopes. Ne-20: 19.992 amu; 90.48% Ne-21: 20.993 amu; 0.27% Ne-22: 21.991 amu; 9.25%A. 20.992 amuB. 1
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N the process of carbon fixation, three molecules of rubp combine with three molecules of co2 to produce three six-carbon molecules, which are then split to produce 12 molecules of 3-phosphoglycerate.
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Https://answers.search.a precipitate is expected when an aqueous solution of potassium iodide is added to an aqueous solution ofahoo.com/search?fr=uh3_answers_vert_gs&type=2button&p=a%20precipitate%20
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If neon gas travels at 400 m/s at a given temperature l, calculate the velocity of butane C4H10 at the same temperature.
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Complete combustion of 5.60 g of a hydrocarbon produced 17.9 g of CO2 and 6.41 g of H2O. What is the empirical formula for the hydrocarbon?
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Which choice lists the correct order of the coefficients of each substance in the following neutralization reaction when the equation is balanced correctly? H2SO4 + LiOH → Li2SO4 + H2O
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It's sometimes said that water is a universal solvent. Do a little research in this term why do some people call it this? What aspect of its structure makes it a good solvent? If a "universal solvent"
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All plant and animal groups existing together and the physical factor with which they interact compose
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The temperature of 2.47 mol of an ideal monatomic gas is raised 14.6 k at constant volume.what are (a) the work w done by the gas, (b) the energy transferred as heat q, (c) the change δeint in the in
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Pentane (c5h12) and hexane (c6h14) form an ideal solution. at 25c the vapor pressures of pentane and hexane are 511 and 150. torr, respectively. a solution is prepared by mixing 25 ml pentane (density
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If sufficient acid is used to react completely with 10.2 grams of mg, mg(s) + 2 hcl(aq) → mgcl2(aq) + h2(g) what volume of hydrogen at stp would be produced? 1. 18.9 liters 2. 4.72 liters 3. 10.3 li
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A saturated solution of magnesium fluoride , mgf2, was prepared by dissolving solid mgf2 in water. the concentration of mg2+ ion in the solution was found to be 1.18×10−3 m . calculate ksp for mgf2
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A compound contains 54.53% carbon, 9.15% hydrogen and the rest is oxygen. how many hydrogen atoms are in the simplest (empirical) formula of the compound?
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A reaction requires 22.4 L of gas at STP. You have 30.5 L of gas at 105 kPa and 373 K. Which of the following statements is true? Use ideal gas law A You will have enough gas for a reaction B You will
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Balance the following reaction. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coefficient is "1." ___ Ca(OH)2+ ___ H3PO4 —> ___ Ca3(PO4)2 + ___ H2O
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Calculate the amount of heat released when 27.0 g H2O is cooled from a liquid at 314 K to a solid at 263 K. The melting point of H2O is 273 K. Other useful information about water is listed below. Cp,
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Which solutions most concentrated ? 1) 0.1 mole of solute dissolved in 400 ml of solvent 2) 0.2 mole of solute dissolved in 300 ml of solvent 3) 0.3 mole of solute dissolved in 200 ml of solvent 4) 0
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A 0.4776 g sample of aluminum reacts according to our experiment to produce alum. 5.0385 g of dried alum crystals are recovered. What is the percent yield of the experiment?
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If the Fe2+ concentration in a saturated solution of iron (II) oxalate is determined to be 5.47x10-4M, what is the calculated Ksp for iron (II) oxalate?
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How well can you apply Boyle’s law to this sample of gas that experiences changes in pressure and volume? Assume that temperature and number of moles of gas are constant in this problem. Using the f
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PLZ HELP ILL GIVE U BRAINLEST!!!!!!!! A cold air mass from the north is blocked by a warmer air mass from the south. However, the air masses are not strong enough to push each other out of the way. As
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Consider the reaction pathway graph below. mc023-1.jpg Which conclusion can be accurately drawn from the graph? mc023-2.jpgHrxn for the complete reaction is negative, but Ea is positive. mc023-3.jpgHr
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A solution is made by dissolving 10.20 grams of glucose (C6H12O6) in 355 grams of water. What is the freezing point depression of the solvent if the freezing point constant is -1.86 °C/m? Show all of
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Erik, a forensic technician, is called to a crime scene to determine if there are any fingerprints. He uses the process of photoluminescence to find the evidence. Which scientific field did he use?
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In steps 8 and 9, you imagined that energy was added to the molecule. What processes would occur in the cell to add this energy?
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Oxygen travels at a velocity of 29.0 m/s. at what velocity would sulpur tetrafluoride travel under the same conditions?
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Write the net ionic equation for this reaction occurring in water: sodium phosphate and calcium chloride are mixed to form sodium chloride and calcium phosphate.
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What volume (in milliliters) of 0.250 m naoh should be added to a 0.140 l solution of 0.0150 m glycine hydrochloride (pka1 = 2.350, pka2 = 9.778) to adjust the ph to 2.63?
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What is the molarity of a naoh solution if 28.2 ml of a 0.355 m h2so4 solution is required to neutralize a 25.0-ml sample of the naoh solution?what is the molarity of a naoh solution if 28.2 ml of a 0
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A solution is made by dissolving 0.08100 moles of ba(oh)2 in enough water to make 670 ml of solution. what is the ph of the resulting solution?
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Write a balanced chemical equation for the decomposition of solid sodium sulfide in aqueous solution.
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Roberto has a sample of an unknown liquid. The label in the bottle of the sample indicates that the liquid has a mass of 117 grams and a volume of 15 cubic centimeters. What is the liquid in the bottl
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Balance the following equations: a. Pb(NO3 )2 (aq) + NaOH(aq) → Pb(OH)2 (s) + NaNO3 (aq) b. C12H22O11(l) + O2 (g) → CO2 (g) + H2O(l) c. Al(OH)3 (s) + H2SO4 (aq) → Al2 (SO4 )3 (aq) + H2O(l)
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How do you overcone or reduce the problem of random error and systematic error while doing an experiment
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Using these excerpts, which government system would be MOST like the United States' government and why? A) Saudi Arabia because it is a unitary government where the leader holds most of the power. B)
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How many hybrid orbitals do we use to describe each molecule c2h5no (4 c−h bonds and one o−h) key?
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Below is the reaction that produces the glucose donor used in glycogen synthesis, where r is uridine. modify the molecules to show the products of the reaction. then answer part (b) below.
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Draw the organic product of the reaction of 1-butene with , . in your answer draw the expanded structure for the acetate group (ac).
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Would having different atmospheric pressure have a effect on the accuracy of gas laws?and if so, which planets should be most reliable and least
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