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How many grams of methane CH4g must be combusted to heat 1.02 kg ofwater from 25.0C to 75.0C assuming H2Ol as a product and 100 efficiency in heat transfer?
The community of Enviro, US (population 26,300) tests its drinking water supply for coliform organisms by the fermentation tube method (five 10 ml portions per sample).
a solution of ethanol c2h5oh in water is prepared by dissolving 57.0 ml of ethanol density 0.79 gcm3 in enough water
What is the pH of a solution obtained by mixing 139 mL of KOH with a pH of 12.66 and 293 mL of Ba(OH)2 with a pH of 11.79. Assume that volumes are additive.
A person suffering from hyponatremia has a sodium ion concentration in the blood of 0.120 M and a total blood volume of 5L. What mass of sodium chloride would need to be added to the blood to bring the sodium ion concentration up to 0.136 M
question a car of mass m is initially moving with a velocity v. the driver hits the brakes due to which the retarding
When 0.490 kJ of heat is added to the gas, it expands and does 211 J of work on the surroundings. What is the value of delta H and delta E for this process?
Show the bond angles which are at least slightly different that are shown by the H2CCBr2 molecule.
Given 479.5 g of hot tea at 83.0 *C , what mass of ice at 0 *C must be added to obtain iced tea at 10.5*C? The specific heat of the tea is 4.18 J/g*C, and change in H(fusion) for ice is +6.01 kJ/mol.
Calculate the maximum molar concentration of a solution that can be purified by reverse osmosis using this membrane at 25 degree C.
Show the orbital-filling diagram for S (sulfur). Stack the subshells in order of energy, with the lowest-energy subshell at the bottom and the highest-energy subshell at the top.
write a balanced chemical equation for the reaction mg hcl. given that 1 mole of mg produces 1 mole of hydrogen h2 what
Chlorination via radical halogenation is a very unselective process and can lead to the formation of all three of the below products. Estimate the relative percentages of each product that will be formed using this means of halogenation. Presume t..
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