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Calculate the number of joules given off when 32.0 grams of steam cools from 110.0 °C to ice at -40.0 °C. (Cp of H2O = 4.184 J/g °C). The specific heat of ethanol is 2.46 J/g oC. Find the heat required to raise the temperature of 193 g of ethanol from 19oC to 35oC. When a 120 g sample of aluminum (Al) absorbs 9612 J of energy, its temperature increases from 25oC to 115oC. Find the specific heat of aluminum.
A sealed container contains 6 mol of hydrogen and 1 moles of nitrogen gas. If the total pressure in the container is 1.5 atm, what is the amount of pressure exerted by the hydrogen?
When you combine 2-ethoxybenzaldehyde and 4-heptanone what is the product and structure of that product. With 95% ethanol and 3M sodium hydroxide
What two properties of ATP make it ideally useful for a form of energy storage in cells? Describe why the hydrolysis of ATP is highly exergonic (give at least two reasons).
Calculate the ratio of CH3NH2 to CH3NH3Cl required to create a buffer with pH = 10.10 [CH3NH2]/[CH3NH3CL] = ? I know that the answer is 0.34 but is not wright to write it in this way in mastering chemistry and they are errors in the submission
What systematic factors in the experience itself may lead to an answer that is not exactely correct.( Do not include student errors such as 'I forgot to set the balance to 0",etc.We assume the student is a perfect experimenter and errors result on..
Compare the pH of a H2CO3 buffer that contains .10 M H2CO3 and .10 M NaHCO3 with another H2cO3 buffer that contains .15 M H2CO3 and .050 M NaHCO3.
Calculate the percent ionization of 7.4x10^-3 M butanoic acid in a solution containing 7.0x10^-2 M sodium butanoate
How many mmoles of ammonia would have to be added to 300. mL of 0.10 M cupric sulfate in order to reduce the Cu2+ concentration to 1.0 x 10-8 ? Kf for [Cu(NH3)4]2+ = 5.0 x 1012 Assume no change in volume.
the temperature of the calorimeter (including its contents) rose from 23.18oC to 27.65oC. What mass, in g, of benzoic acid was burned. here is what i did, 3226/122.13=26.41 delta t =4.474 so 4.474*12.5/26.41 =2.12 is the answer 2.12g
Draw the structure of the aromatic organic product formed from the reaction of the following compound with
The steam reforming of methane is widely used in industry to make hydrogen, as given in the following reaction:CH4(g) + H2O(g) ? CO(g) + 3H2(g) a) Calculate the (approximate) enthalpy change
its clay concentration and the CEC of the clay be able to estimate the draction of CEC due to organic matter in the sample
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