Chemistry

would the volume be different if the gas was argon (under the same conditions)? match the words in the left column to the appropriate blanks in the sentences on the right.
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how many possible orientations are there with which co and o2 can collide, and how many of those orientations can result in a successful reaction?
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calculate the molarity of a solution made from 2.63 moles of nacl dissolved in a total volume of 500.0 ml.
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Conservation of Mass In chemical reactions, mass is neither gained nor lost. The total mass of all the reactants equals the total mass of all the products. Atoms are just rearranged into different compounds. Using this idea, solve the following problems. 1. 2KCIO3 2KCI+ 30 If 500 g of KCIO, decomposes and produces 303 g of KCI, how many grams of O are produced? 2. N + 3H 2NH3 How many grams of H are needed to react with 100 g of N to produce 121 g of NH? 3. 4Fe +30 2FeO3 How many grams of oxygen are needed to react with 350 g of iron to produce 500 g of FeO3? 4. CH + 202 CO + 2HO 16 g of CH react with 64 g of O, producing 44 g of CO How many grams of water are produced? 5. CaCO3 Cao + CO, How much CO, is produced from the decomposition of 200 g of CaCO, if 112 g of CaO are produced?
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what is the mass of sodium chloride required to create a 0.875 m solution 534 g of water. how many moles of nacl is required
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How can chemical energy be converted into mechanical energy?A. turning on a flashlightB. sharpening a pencil with an electric pencil sharpenerC. heating up bread in a toasterD. eating breakfast and then going for a run
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if the initial concentration of a is 0.0275 m and the rate constant has a value of 0.0082 s-1, what is the concentration of a after 540.0 s?
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adding this test solution will precipitate sulfate ions: select one: a. naoh b. bacl2 c. hno3 d. nh4cl
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which compound in each pair below would you expect to have a greater fluorescence quantum yield? explain
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why do you think this reaction only undergoes mono iodination? think about the discussion earlier about activation and deactivation of the benzene ring and the role iodine may play once it is on the ring.
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the second electron affinity values for both oxygen and sulfur are unfavorable (endothermic). explain.
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How many moles are in 8.52 x 10^33 molecules of Carbonic Acid (23)?
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two compounds are both composed of the exact same types and number of atoms. however, the atoms are connected in different ways in each compound. these two compounds would be classified as .
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the unit cell in a certain lattice consists of a cube formed by an anion, a, at each corner, an anion in the center, and a cation,x, at the center of each face. how many anions and cations are there in the unit cell?
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a metal will be placed in fire and an electron will absorb enough energy to be promoted to a higher energy state. what do we call this higher energy state?
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What pressure is required to reduce 50 mL of a gas at standard conditions to 20 mL at a temperature of 23C?Answer in units of atm.
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which of the following molecules will not contain a multiple bond in its lewis structure? multiple choice c2h2 cs2 ncl3 co2 ch2o
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which statement describes density? Check all that applyDensity is a chemical property of an object.The density of an object is constant.Density is a derived unit of measure. Density is the sum of the mass and volume of an object. The density of an object determines whether it will sink or float.
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if 75.0 grams of carbonic acid are sealed in a 2.00 l soda bottle at room temperature (298.15 k) and decompose completely via the equation below, what would be the final pressure of carbon dioxide (in atm) assuming it had the full 2.00 l in which to expand?
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Question at position 1 What is the pressure of gas if 2. 89-g of CO2 sublimates in a 9. 60-L container at 255. 22K
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which of the methods below can be used to prevent the oxidation of an iron object? 1) painting the object 2) attaching a sacrificial electrode made of zinc 3) submerging the object in water
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if a reaction is 1st order, how many half-lives are required for 99.9% of the original sample to be consumed?
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50 pointsProblem 1. What masses of 15% and 20% solutions are needed to prepare 200 g of 17% solution?Problem 2. What masses of 18% and 5% solutions are needed to prepare 300 g of 7% solution?Problem 3. 200 g of 15% and 350 g of 20% solutions were mixed. Calculate mass percentage of final solution.Problem 4. 300 g of 15% solution and 35 g of solute were mixed. Calculate mass percentage of final solution.Problem 5. 400 g of 25% solution and 150 g of water were mixed. Calculate mass percentage of final solution.
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an organism that uses inorganic co2 as its carbon source is called a(n) while an organism that must obtain its carbon in an organic form is referred to as a(n)
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