Master Chemistry with Fun Quizzes & Brain Teasers!

Hi i really need help ASAPNeon in a piston is compressed to a volume of 11 L. Its original volume was 21 L at 11.1 atm. Find the new pressure in atm. Describe what is happening to the gas.
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Would you expect carboxylic acids with general formula CH3(CH2)nCOOH to become more or less water soluble as n increases? Explain.
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The pH of a solution is 7.880. What is the concentration of [H30+] in the solution ?
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Calculate the pH of 0.65 M H2SO4 (sulfuric acid) solution? (Ka2: 1.1x10-2)
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When Luis burns wood in a campfire, the particles in the wood break down and energy is released. What type of energy does the wood contain before Luis burns it?heatelectricalchemicallight
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A student measures the mass of a clean, dry flask and stopper is measured using a laboratory balance. The mass of the empty stoppered flask is 36.724 g. The flask is then filled with deionized water and the mass of the filled stoppered flask is determined to be 65.858 g. The mass of the filled stoppered flask equals the sum of the mass of the empty stoppered flask plus the mass of the water. what is the volume of the flask?
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A 2-column table with 3 rows. Column 1 is labeled Substance with entries upper O subscript 2, upper N subscript 2, upper C upper O subscript 2. Column 2 is labeled Molar mass with entries 32.00 grams per mole, 28.02 grams per mole, and, 44.02 grams per mole.For each pair below, select the sample that contains the largest number of moles.Pair A2.50 g O22.50 g N2
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a. Use the following data to calculate the enthalpy of hydration for calcium chloride and calcium iodide. Lattice Energy* Hsoln CaCl_2(s) -2247 kJ/mol -46 kJ/mol CaI_2(s) -2059 kJ/mol -104 kJ/mol *Lattice energy is defined as the energy change for the process M^+(g) + X^-(g) -------> MX(s). b. Based on your answers to part a, which ion, Cl^- or I^-, is more strongly attracted to water?O ChlorideO Iodide
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Calculate the pH of 0.65 M H2SO4 (sulfuric acid) solution? (Ka2: 1.1x10-2)
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As the temperature of the water increases, what happens to the number of water particles in a mL (cm3)?
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Which is the correct oxidation half reaction for the following reaction K2Cr2O7 + H2O + S SO2 + KOH + Cr2O3
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A Tesla roadster electric vehicle has a MPGe (Miles per Gallon equivalent) of 102 miles per gallon. A Ford F-150 has a rating of 21 MPG. The weight of the electric battery in the Tesla is 1062 lb. The volume of the gas tank in the F-150 is 83.2791 L. The density of gasoline is 748.90002 kg/m. Which weighs more, the battery in the Tesla or the gasoline in the F-150.?
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Q6. A student mixes 50.0 mL of 1.00 M Ba(OH)2 with 86.4 mL of 0.494 M H2SO4. Calculate themass of solid BaSO4 formed and the pH of the mixed solution.
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Which process was responsible for producing gases in the early atmosphere?
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Compared to an enzyme with a Km of 10-6 mM, an enzyme having a Km of 10-8 mMA. would have 100 times more product formed per min B. would be described as having binding more tightly to the substrate C. would be described as having a significantly lower affinity for the substrate D. would have a Vmax 100 times larger E. would have identical values for Vmax
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Someone can help me whit this? I have the whole document too.
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In 1909, Ernest Rutherford performed an experiment to explore the atomic structure. In his experiment, he projected high-speed particles onto a thin gold foil. He found that all particles did not follow the same path. Most of the particles passed through the foil without any scattering, implying that most of the space in an atom is empty. Some particles were scattered at a large angle, and very few of them scattered back in the direction from which they had come. Based on these observations, Rutherford proposed an atomic model, which is known as Rutherfords atomic model.O TrueO False
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The chart below describes the molecular motion in solids, liquids, gases, and plasma. Solids Liquids Gases Plasma slower than liquids, slower than solids but faster than solids faster than solids, gases, and plasma faster than gases and but slower than liquids and gases plasma plasma The information in the chart about molecular motion is incorrect for:______1. solids 2. liquids 3. gases 4. plasma
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Substituents on an aromatic ring can have several effects on electrophilic aromatic substitution reactions. Substituents can activate or deactivate the ring to substitution, donate or withdraw electrons inductively, donate or withdraw electrons through resonance, and direct substitution either to the ortho/para or to the meta positions. 1. From the following list, select the substituents that have the indicated property. The substituents are written as -XY, where X is the atom directly bound to the aromatic ring.a. Activation of the ring towards substitutioni. -CF3ii. -NO2iii. -OCOCH3 iv. -NH2
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Concentration and ion moles are equal only when volume is what ?
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what structural units make up iconic solids
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Calculate the pH of a solution having the following ion concentrations at 298 K. [H+] = 4.6 10^-2 M
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Which of the following best expresses the definition of a closed system? (2 points) Energy can enter or leave the system but matter cannot. Heat and matter are both able to enter or leave the system. Matter can enter or leave the system but energy cannot. Heat and matter can enter the system but cannot leave the system.
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In calculating the mass of an atom the mass of the electrons is essentially
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