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A solution of KOH is prepared and is standardized against 0.5418 g of KHP. The phenolphthalein endpoint was reached by the addition of 25.91 mL of KOH. What is the molarity of KOH solution?
How long does it take for the radioactive isotope to decay to 4.9×10?3 mg? (Assume no excretion of the nuclide from the body.)
What causes an atom, molecule, or ion to be paramagnetic. Which of the ions (Pb2+, Pb4+, S2-, Fe3+, Zn2+) are paramagnetic. What term describes the magnetic properties of the others
Three bulbs are connected by tubing, and the tubing is evacuated. The volume of the tubing is 32.0 mL. The first bulb has a volume of 35.0 mL and contains 3.00 atm of argon, the second bulb has a volume of 250 mL and contains 2.27 atm of neon
A sample of c3h8 has 6.56 x 10^24 H atoms. How many carbon atoms does the sample contain. what is the total mass of the sample
How many kilograms of NH3 will be produced when 25.0 kg of CaCN2 react with excess water?
urea h2nconh2 is used extensively as a nitrogen source in fertilizers. it is produced commercially from the reaction of
A student ran the following reaction in the laboratory at 689 K H2(g) + I2(g) 2 HI(g)
Calculate the value of K for the reaction at this temperature. Give your answer in scientific notation
what is the pressure in millimeters of mercury of 0.0110 of helium gas with a volume of 214 at a temperature of
What is the empirical formula of a compound composed of 3.25% hydrogen (H), 19.36% carbon (C), and 77.39% oxygen (O) by mass. HCO
what is the enthalpy change per mole of ethanol combusted? The specific heat capacity of water is 4.184 J/g×K and the molar mass of ethanol is 46.07 g/mol.
if i have 0.04M SDS, 0.01M NaCl , the volume of SDS is 0.2 ml and the total volume is 50.2 ml then how i calculate the concentration of ions from the mixed solution of SDS/Nacl
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