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The lemon juice(analyte) before the end point was reached. Estimate the analyte concentration, assuming that the acid in the lemon juice is monoprotic.
Use a stock titrant concentration of 0.1000mol/L NaOH, determine the NaOH concentrations prepared using the following dilutions.
In the old definition of standard state, STP corresponded to conditions of "standard" temperature (T=0°C) and standard pressure (p= 1 atm).
If the gas is at room temperature, what volume would the gas occupy if it was released in the room? Assume normal barometric pressure.
Write the chemical equation for all the reactions both SN1 and SN2 involving primary and secondary substrates. Rank the primary halide in order of increasing reactivity toward SN2.
Start with three carbons bound together (-c-c-c-). What individual atoms or functional groups could you add to the carbons to make the molecule hydrophobic?
If the partial pressure of NO is decreasing at the rate of 30 torr/min, what is the rate of change o f the total pressure in the container.
Calculate the mass of vapour present in a room of volume 250 meter cube that contains air at a temperature of 23 degree centigrade on a day when the relative humidity is 53%.
A thermodynamic study of DyCl3 determined its standard enthalpy of formation from the following information. Determine delta (subscript f) H for DyCl3 from the following reaction enthalpies.
Why are London Dispersion forces of the sample molecules strongly influencing GC measurements? And why are they usually negligible in TLC experiments on silica gel?
Metallic iron has a bcc structure at 20 C and a density of 7.8 g/cm3. What is the length of the side of the unit cell for iron and what is the atomic radius?
The element rhenium (Re, atomic number 75) has two naturally occurring isotopes, Re-185 (mass = 184.935 amu) and Re-187 (mass = 186.956 amu). Calculate the percent abundances of the isotopes of r
The element bromine at room temperature is a liquid with a density of 3.12g/ml calculate the mass of 125 ml of Bromine. What volume does 85.0 g of bromine occupy?
What would be the vapor pressure at 25.0 °C of a solution of 5.00 g of glucose (C6H12O6) in 100.0 g of ethanol (C2H5OH)?
A sample of solid having a density of 3.43 g/cm3 had an apparent mass of 13.9264. The density of the balance weights is 8.00 g/cm3. Calculate the true mass of the object.
Describe in detail how you would prepare a solution with a concentration near 0.100 M from a 0.650 M stock solution. Calculate the final concentration of the diluted solution (it won't be exactly
How much concentrated solution would you take to prepare 2.85 of 0.570 by mixing with water? HCl is purchased in 37% mass and has a density of 1.20 g/mL.
If 50.0 grams of iron(III) oxide were mixed with 50.0 grams of aluminum, what maximum mass of iron metal could be produced?
Silver Nitrate reacts with sodium chloride to form solid silver chloride and sodium nitrate. How many grams of Sodium nitrate formed when 0.230 grams of sodium chloride react?
What would be the boiling point of acetone (AHvap = 32.0 kJ/mol) at this elevation? What would be the vapor pressure of acetone at 25.0°C at this elevation?
Commercial grade HCL solutions are typically 39.0% (by mass) HCL in water. Determine the molality and molarity of the HCL, if the solution has a density of 1.20 g/ml.
The first-order reaction A products has a half-life, t1/2, of 46.2 min at 25°C and 2.6 min at 102°C. Calculate the activation energy of this reaction.
Draw the three isomers of benzenedicarboxylic acid
What is the density of the atom in grams per cubic centimeter? Assume the nucleus is a sphere with volume =(4/3)pi r^3.
The first-order rate constant for the decomposition of a certain antibiotic in water at 20 degrees celsius is 1.65 yr^-1. If a 6.0 x 10^-3 M solution of the antibiotic is stored at 20 degrees cels