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How much would it cost for me to go 4 years to palomar college to become a chemist without financial aid?
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Miguel de Cervantes spent his young adult life in the military, only becoming an accomplished _____ later in his life.
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You have performed an iodometric titration to determine the vitamin C concentration of 25.00 mL of an unknown solution. 33.45 mL of a 2.030 x 10-3 M solution of KIO3 were needed to reach the endpoint.
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What can be said about the polarity of water? A. It causes water molecules to be attracted to other water molecules. B. It prevents hydrogen bonds from forming between water molecules. C. It's the res
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1. Explain why the can collapsed using the Combined Gas Law where T1 is the initial temperature of the air inside the can before the can was inverted and T2 is the temperature of the air inside the ca
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In the vertical columns of the periodic table: Atomic weight increases from top to bottom. Outer shell electrons increases from top to bottom. The number of shells increases from top to bottom. All th
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How many liters of oxygen gas, at standard temperature and pressure, will react with 35.4 grams of calcium metal? Show all of the work used to solve this problem. 2 Ca + O2 yields 2 CaO
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In a fission reaction of U-235, there was a release of 9.20 × 1011 kJ of energy. What amount of mass in kilograms would have been lost? Recall that c = 3 × 108 m/s. 1.02 × 10-2 1.02 × 10-5 1.02 ×
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Both artists and scientists contribute to our understanding of the world around us. Identify the ways that art and science are similar. Check all that apply. Both artists and scientists use their imag
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Year 1. each finished mug requires 0.4 pounds of material (do not round your intermediate calculations).
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The highest pressure ever produced in a laboratory setting was about 2.0 x 10^6 atm. If we have a 1.0 x 10^-5 liter sample of a gas at that pressure, then release the pressure until it is equal to
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In the following reaction, how many grams of oxygen will react with 10.47 grams of benzene (C6H6)? 2C6H6 + 1502 12CO2 + 6H2O The molar mass of benzene is 78.1074 grams and that of O2 is 32 grams.
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Which is a conjugate pair in the following equilibrium?H2C2O4(aq) + HPO42-(aq) HC2O4-(aq) + H2PO4-(aq)
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After millions of years, sedimentary rock containing phosphorus is uplifted from plate tectonic activity. Follow the phosphorus molecules found in the rock through the whole phosphorus cycle, by numbe
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What's the number of electrons that must be gained by atoms of chlorine to achieve a stable electron arrangement?
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Element x reacts with chlorine to form an ionic compound that has the formula xcl2 to which group on the periodic tAble could element x belong
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What is the freezing point of a solution that contains 0.550 moles of NaI in 615 g of water? (Kf = 1.86°C/m; molar mass of water = 18 g) 1.66°C –3.33°C 3.33°C –1.66°C
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1. If every oxygen ion (combined with an aluminum ion) has a charge of –2, what must the charge of each aluminum ion be? How can you tell this?Write at least two complete sentences.
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How many carbon atoms are present in 0.92 moles of C2H6O? a. .92 C atoms b. not enough information c. 1.3 x 10-23 atoms d. 1.11 x 1024 atoms
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Hydrogen peroxide (H2O2) is a compound made from two elements: Hydrogen and oxygen. Water (H2O) is also a compound made from hydrogen and oxygen. What makes these two compounds different?
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In terms of environmental impact, what’s the difference between natural gas, coal, and biomass? Consider both carbon dioxide (CO2) emissions and acid rain.
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Suppose an experiment is designed to test the durability of batteries in different conditions. All of the batteries tested are double-A (AA) Brand X. All sets of batteries are preconditioned in differ
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Water that flows from behind a large dam can cause machines to produce electricity. What change takes place? Question 6 options: A.Heat energy changes into mechanical energy. B.Chemical energy is used
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The mass of the rock is 25 grams. It is then placed into a graduated cylinder to find its volume (see the picture below). What is the rock's density? Use the formula D=m/v
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At 19.7 grams metal rod was placed to a cylinder with water, the liquid level raised from 18.4ml to 22.6ml what is the density of the metal
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You have diluted solution of nitric acid with the concentration of 1,5 mol/l, available. What volume would you have to take from it in order to make another weaker solution with the concentration 0,2
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How many moles of the excess reactant remain unreacted when the reaction is over if 5 moles of silver sulfide react with 8 moles of aluminum metal?
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Terephthalic acid is an important chemical used in the manufacture of polyesters and plasticizers. It contains only C, H, and O. Combustion of 20.20 mg terephthalic acid produces 42.81 mg CO2 and 6.57
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One type of gas mixture used in anesthesiology is a 50%/50% mixture (by volume) of nitrous oxide (n2o) and oxygen (o2), which can be premixed and kept in a cylinder for later use. because these two ga
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The Practical rule is that a radioactive nuclide is essentially gone after 10 half-lives what percentage of the original radioactive new nuclide is left after 10 half-lives how long will it take for 1
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Design an experiment to collect data that supports the claim that a 0.25 M KCl solution is a homogeneous mixture. Describe the steps, the data you would collect, and how the data support the claim. La
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Consider the following three-step representation of a reaction mechanism. Step 1: A + B mc016-1.jpg AB (fast) and the rate = k[A][B] Step 2: AB + B mc016-2.jpg AB2 (slow) and the rate = k[AB][B] Step
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1.8g of organic compound on combustion give 3.21g of CO2, 1.322g of H2O.Calculate the empirical formula of the compound.
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When a 10 mL graduated cylinder is filled to the 10 mL mark, the mass of the water was measured to be 10.055 g at 20ºC. If the density of water is taken to be 0.9975 g/mL at 20ºC, what is the percen
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Which resonance structure of the phosphate anion, [po4 ]3−, is not equivalent to the other three? g?
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0.64 g of adrenaline in 36.0 g of CCl4 produces a bp elevation of 0.49 °C. What is adrenaline's molecular weight? Kb value for CCl4 is 4.95 °C/m.
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Thiamine pyrophosphate (tpp) is a coenzyme derived from vitamin b1 that is used by the enzyme pyruvate dehydrogenase to convert pyruvate to acetyl coa. tpp has a relatively acidic proton that can prod
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Employee training is also a requirement of HAZCOM program. When hazardous chemicals are present, you must be trained: A. Before you start an assignment for the first time B. Whenever a new physical o
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How much heat in joules is required to heat a 43g sample of aluminum from an initial temperature of 72˚F to a final temperature of 145˚F ? Special heat capacity for aluminum is 0.903 J/g˚C
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Imagine that you are Alfred Wegner travelling to a world science convention in order to explain your theory of continental drift to a panel of esteemed and respected scientists. Write an essay detaili
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If some impurities in a crucible are not burned off during the first step but are removed during the second heating, then will the mass of the anhydrous salt be too high or too low?
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You then collect the third product, analyze it, and determine that it has a formula mass of approximately 88 amu. what is the identity of this product?
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The dosage of quinine when a 145−lb adult takes a 200.−mg tablet is equivalent to _____ μg drug per kg of body weight. Please explain your steps.
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State the name of the radioactive isotope that has a half life that is approximately the same as the estimated time origin of earth
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Which words in the sentence make up the appositive phrase? There is a sale happening now for a popular holiday gift, tablet computers. A. tablet computers B. happening now C. There is a sale D. a pop
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What coefficients would balance the following equation? __C2H6 + __O2 → __CO2 + __H2O A. 1C2H6 + 5O2 → 2CO2 + 3H2O B. 2C2H6 + 5O2 → 4CO2 + 6H2O C. 2C2H6 + 7O2 → 4CO2 + 6H2O D. 2C2H6 + 10O2 →
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Reactant A can participate in both of these reactions: 1) A + B --> C + D ∆Grxn = –15.6 kJ 2) A + E --> F + G ∆Grxn = –20.5 kJ Reaction 1 has a much higher rate than Reaction 2 under the sa
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The graph below shows how solubility changes with temperature. What is the solubility of Na2HAsO4 at 60°C? 20 g/100 mL of water 46 g/100 mL of water 65 g/100 mL of water 70 g/100 mL of water
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While in Europe, if you drive 119 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 38.0 mi/gal ? Assume that 1euro=1.26doll
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Please help!? will vote brainliest All life that we know of is based on carbon. Carbon’s ability to form many chemical bonds is an important characteristic that allows it to form the basis of life.
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