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Can the lubricant be removed by heating the spooled wire to some temperature? If so what temp and how long should it be held at the temperature?
How does the reaction change if the OH- concentration is decreased by a factor of 5? What is the change in rate if the concentration of both reactants is doubled?
Ashing burns off the organic matter in a sample, leaving just the mineral residue,which can then be dissolved for analysis.2. The stoichiometry of the complexation reactions between EDTA and calcium
What volume in liters of 0.75 molal sodium phosphate dodecahydrate aqueous(density 1.16g/mL) is needed to precipitate all of the ca2=+ from 0.600L of 0.500 molar calcium nirate aqueous solution?
Considering the following two nuclear processes which produce isotopes useful for medical imaging.
What mass of C2H5OH should be added to 620kg of the paraffin in formulating the mixture if the vapor pressure is of ethanol at 35 degrees C over the mixture is to be 8 torr? The vapor pressure of p
Mgco3 plus 2hcl plus mgcl2 plus h2 h20 plus co2 if 10 games of c02 is produced calculate the mass of magnesium and hydrochloric acid reacts whats the answer
Prepare a series of dilutions of CoCl2.6H2O in the range of 0.000 to 0.200 mol dm-3. Determine the absorbance of the solutions at 525nm.
Why the no. of electron changes by one or increases by one in elements?
You carefully add 1.25x10 to the 4 joules of heat energy to the sample and find that its temperature rises 18.0 degrees Celsius. what is the samples specific heat?
You react (E)-2,7-dimethyl-4-octene with bromine, collect product, and then perform a second reaction with potassium hydroxide.
A cargo plane traveling towards a positive x-direction at an elevation of 60 m drops a package to a certain village. At what horizontal distance from the village should the package be dropped?
Calculate the energy in the form of heat (in kJ) required to change 75.0 g of liquid water at 27.0 C to ice at 20.0 C. Assume that no energy in the form of heat is transferred to the environment.
The volume of the baloon is now 1.3 L. What is the final pressure of the gas in the balloon? Assume that the temperature and moles of an ideal gas within a balloon are constant. Round your answer to
Calculate the average atomic mass in units of amu for iron (Fe) given that the naturally occurring element exists mainly as a mixture of Fe-56 (91.754%0), Fe-54 (5.845%), and Fe-57 (2.119%). Does yo
A balloon that contains 0.750 moles of gas has a volume of 16.8 L. If the balloon expands to a volume of 25.4 L at a constant pressure and temperature, how many moles of gas would the balloon contai
The heat capacity of H2O(l) is 75.2 J/mol·K and that the heat capacity of H2O(s) is 37.7 J/mol·K, calculate the heat of fusion of water at -15°C.
Which of the following correctly shows a neutralization reaction between a hydronium ion and a hydroxide ion?
It the activation energy for the 2Cl from Cl2 is 243.4 KJ what is the activation energy for the reverse reaction ("cl to Cl2)?
Which of the following best describes the forces that generate geothermal power?
A 5.45g combustible sample is burned in a calorimeter. The heat generated changes the temperature of 555g water from 20.5 C to 39.5 C. How much energy is released by the burning? The specific heat o
On a potential energy diagram, the activation energy is greatest under which of the following conditions?
According to the collision theory and model created to explain the collision theory, why does a catalyst cause a reaction to speed up?
Biotechnology has allowed us to genetically modify corn with a gene that acts as a pesticide. What could be a possible environmental impact of this development?
Which of the following is the salt in the Br nsted-Lowry neutralization reaction?