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a person inhales 640 g of O2 per day. if all the O2 is used to convert sugar into CO2 and H2O , how much sucrose ( C12H22O11 ) is consumed in the body in one day and what is the heat evolved ? del H combustion of sucrose = -- 5645 kj /mol
Is this equation to determine pH of an acid-base solution specific to certain situations, or can it be used as an all-purpose equation
How many grams of hydrogen gas are produced upon complete reaction of 4.6 moles of sodium with water? What assumption must you make concerning the water? Sodium oxide is the other product.
Mercury is a 6th row and Zinc is a 4th row transition metal. if ionization energy depends upon effective nuclear charge and the distance of electrons from the nucleus, why do you think it takes more energy to ionize Mercury than Zinc
The first ionization energy of a boron atom is 1.33 aJ. What is the frequency and wavelength, in nanometers, of photons capable of just ionizing boron atoms?
Use the equation pH= pKa + log ([conjugate base]/[acid]) to derive an expression showing the fraction of acid (f) in terms of its pKa and pH of the solution.
A solution is prepared by dissolving 49.3 g of of KBr in enough water to form 473 mkof solution. calculate the mass % in the soulutionif the density is 1.12 g/mL
Sketch a heating curve for a substance X whose melting point is 40oC and whose boiling point is 65oC. Describe what you will observe as a 60.0 g sample of X is warmed from 0oC to 100oC.
What is the velocity of a hydrogen molecule after absorbing a photon @ 58.4 nm. What is the translational energy of the molecule in J mol-1
What is the expected boiling point of a solution prepared by dissolving 5.83 g of sodium iodide (NaI) and 59.2 g of water (H2O)? For water, Tb=100.00C and Kb=0.512C*m^-1.
Predict qualitatively, which of the following aqueous solutions, (a), (b), (c) or (d), each containing 2.0 moles of the given substance dissolved in 0.5 kg of water, has the lowest and which has the highest boiling point: a) HNO3, b) sugar, c) ace..
Chemistry Concentrations, In each of the following pairs, indicate which has the higher concentration of Cl- ion
how much product could form assuming no loss of grignard reagent to side reactions and addition of excess benzophenone.
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