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How much heat is required to convert 32 g of ethanol at 27 degrees C to the vapor phase at 78 degrees C?
A 6.50 x 10^-5 M solution of potassium permanganate has a percent transmittance of 27.3% when measured in a 1.15-cm cell at a wavelength of 525 nm.
How many joules of heat are given off when 5 g of water cool from 75 degrees C to 25 degrees C?
A certain second-order reaction (B-> Products) has a rate constant of 1.80×10^-3 M^-1xs^-1 at 27C and an initial half-life of 216 s . What is the concentration of the reactant B after one half-life?Express the molar concentration numerically.
What is the solubility product constant? Given Ksp = 1.1 x 10^-3 for BaF2(s), calculate the molarity of Ba+2 in a saturate solution of BaF2 (at equilibrium).
Determine How many mg of a 298 mg sample remains unreacted after twenty three days if 32P decompose by a first-order mechanism, half-life = 14.3 days.
In fermentation of glucose, 780 mL of CO2 gas was produced at 37 degrees C and 1.00 atm. What is the volume(L) of the gas when measured at 22 degrees C and 675 mmHg?
how many grams of KO2 are needed to produce 885.0 L of O2 at 22.0 degrees Celsius and 1.00 atm
The pH of a bicarbonate-carbonic acid buffer is 8.00. Calculate the ratio of the concentration of carbonic acid (H2CO3) to that of the bicarbonate ion (HCO3-).
what are the ground state electron configuration of the elements in period 2 of this alternate reality?
A 36.4 l volume of methane gas is heated from 15 degrees C to 98 degrees C at constant pressure. what is the final volume of the gas?
what happens if cellulose is reacted with maleic anhydride C4H2O3? Again, how is the cellulose molecule/structure altered and what are the reaction by-products?
Compute the pH if NaOH solution of the 10.00 mL has been mixed. pKa of HCOOH = 3.74
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