• How to find moles of electrons transfered from this redox reaction:?

    Your Answer: 
    CH3CH2OH+ 1/2 O2 ---> CH3CHO+H2O With a reduction potential of E =1.02V. I know the answer is 2 moles but, despite numerous searches, I cant figure out why.
    2 hours ago
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  • Calculate the total number of atp from 1 molecule of a fat with 80 carbons in the fatty acid part of the molecule?

    Your Answer: 
    Calculate the total number of atp from 1 molecule of a fat with 80 carbons in the fatty acid part of the molecule? show all work please
    5 hours ago
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  • What are the balanced chemical equations?

    Your Answer: 
    Soap solution with: a.) NaCl b.)MgCl2 c.)FeCl3 d.)HCl
    5 hours ago
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  • AP Chemistry homework and I need help :(?

    Your Answer: 
    A sealed vessel initially contains only CO2(g) and CACO3(s). If the temp remains at 315K and the volume remains at 1.6L while the reaction bellow occurs, will the pressure inside the vessel increase, decrease, or remain the Same? Justify your answer. CaO(s)+CO2(g)---->CaCO3(s)
    6 hours ago
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  • Stuck on this grade 11 chemistry question...please help?

    Your Answer: 
    12 grams of chlorine was reacted with 20 grams of hydrogen and 20 grams of oxygen. 3.80 grams of oxygen was left unreacted and 19.77 grams of hydrogen was also unreacted. If the molar mass of the substance was known to be 169 g/mol. What is the empirical and molecular formula of the substance?
    6 hours ago
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  • Is dibromomethane polar or non-polar?

    Your Answer: 
    7 hours ago
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  • For the equilibrium 3NO2(g) N2O5(g) + NO(g)?

    Your Answer: 
    For the equilibrium 3NO2(g) N2O5(g) + NO(g) Kc = 1.0 × 10-11 If a 4.00 L container initially holds 0.21 mol of NO2, how many moles of N2O5 will be present when this system reaches equilibrium? Enter your answer in scientific notation. moles of N2O5 =________________ x 10 to the power of __________________mol
    9 hours ago
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  • The decomposition of urea, (NH2)2CO in 0.10 M HCl follows the equation?

    Your Answer: 
    The decomposition of urea, (NH2)2CO, in 0.10 M HCl follows the equation (NH2)2CO(aq) + 2H+(aq) + H2O 2NH4+(aq) + CO2(g) At 65°C, k = 5.84 × 10-6 min-1 and at 75°C, k = 2.25 × 10-5 min-1. If this reaction is run at 85°C starting with a urea concentration of 0.0038 M, how many minutes will it take for the urea concentration to drop to 0.0012... show more
    9 hours ago
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  • Which of the following equations is balanced?

    Your Answer: 
    A. 2P + O2 ---> P2O5 B. 4P + 2O2 ---> 2P4^O5 C. 4P + 5O2 ---> 2P2O5 D. 5P + 4O2 ---> 2P4O5
    9 hours ago
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  • Dilution math problem?

    Your Answer: 
    Calculate the volume of 6M NaOH solution needed to prepare 0.5L of 0.1M solution by dilution. Would this be M1*V1=M2*V2? Which in this case: 6M*V1=0.1M*0.5L V1=0.008L
    9 hours ago
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  • We demonstrate the law of conservation of mass in chemical equations when we?

    Your Answer: 
    A. predict the chemical formula of the products B. insert reaction coefficients before reactants and products C. ensure all products will be solids D. classify them according to type
    9 hours ago
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  • Need help with this Orgo question?

    Your Answer: 
    Can someone give me the answer? All I know is that the h2cro4 would make the OH into a carboxylic acid but I don't know what to do after that (the ch3ch2oh and H+ part).
    9 hours ago
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  • If you want to make a lactic acid buffer that is pH = 4.5 you can use a combination of lactic acid (MW=90g/mol) and sodium lactate...?

    Your Answer: 
    If you want to make a lactic acid buffer that is pH = 4.5 you can use a combination of lactic acid (MW=90g/mol) and sodium lactate (112g/mol). To make a 2L flask of 0.2M lactate buffer, pH 4.5, how much of each component will you put into the flask. Ignore changes in volume from the addition of the components. Please help! I'm trying to study... show more
    10 hours ago
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  • Chem help please?

    Your Answer: 
    Fireflies flash at a rate that depends on the temperature. At 29 C, the average rate is 3.3 flashes every 10 seconds, whereas at 23 C, the average falls to 2.7 flashes every 10 seconds. Calculate the "energy of activation" (in kJ/mol) for the flashing process. (Note: Do not include units and present your answer to 2 significant figures).
    10 hours ago
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  • Coffee Cup Calorimetry Help??

    Your Answer: 
    A total of 2.00 mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 105 g of solution. The reaction caused the temperature of the solution to rise from 21.00 to 24.70 ∘C. What is the enthalpy of this reaction? Assume that no heat is lost to the surroundings or to the coffee cup itself and that the specific... show more
    10 hours ago
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