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If the melting point of the compound is unknown the melting point measurement could take an exceedingly long time if the rate of heating of 2C/min is followed over the entire range from room temperature to the melting. What technique can be used to make this more efficient?
Calculate the concentrations of the protoneated and unprotonated forms of bromothymol blue in 100 mL of a pH 8.1 buffer solution to which 1.0 mL of 0.005 M solution of bromothymol blue in 80% wate/20%ethanol has been added.
hydrogen and nitrogen react to form ammonia nh3. write the balanced equation and determine how many moles of nitrogen
Large quantities of liquefied natural gas (LNG) are shipped by ocean tanker. At the unloading port provision is made for vaporization of the LNG so that it may be delivered to pipelines as gas.
What is the theoretical yield (in mol) of carbon monoxide when 2.62 mol oxygen reacts with 2.08 mol of ethanol (CH3CH2OH) to produce carbon monoxide and water
Rewrite the atomic cores in the space below. Place an electron pair between each hydrogen atom and the sulfur atom. Write the lewis structure for hydrogen sulfide in the box, distirbuting the remaining valence electrons so that the hydrogen atoms ar..
To determine the concentration of a 25.0 mL acetic acid solution (Ka for acetic acid is 1.8 x 10-5), 25.0 mL of 0.200 M NaOH solution is used to reach the endpoint of titration. Calculate the pH of the endpoint.
What is the wavelengths associated with an electron moving at 1.5x10^8 cm/s and a 60g tennis ball moving 1500 cm/s. Which particle has a longer wavelength
What minor product(s) might be expected by this method. Give the detailed reaction mechanism leading to the final product (major). What simple chemical test(s) would help establish that you had, in fact, made the desired alkene product
Which elements exist as molecular species in their most stable states at 25 degrees C and 1 atm? iodine, magnesium, sulfur, cesium, carbon, oxygen, phosphorus, neon
Write a balanced chemical equation for the reaction of HNO3 with S to form H2SO4, H2O and NO2. How many moles of HNO3 and H2O are there
What are the spectator ions in the solution after completely precipitating an insoluble carbonate compound when mixing BaCl2(aq)
How many grams of Ag3PO4 can be produced from the reaction of 2.50 L of a 0.200M AgNO3 with an excess of 0.750 K3PO4 solution according to the following equation?
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