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4 grams of an epoxy with a "weight per epoxy" of 675 in a 70% solid solution is needed for a reaction. How much of an epoxy that has a "weight per epoxy" of 435 in 80% solid solution is needed for the same reaction?
A 25-g sample of an alloy at 92 degrees celsius is placed in 50 grams of water at 20 degrees celsius. If the final temperature reached by the alloy sample and water is 27 degrees celsius.
Draw all the structural isomers for the molecular formula C4H9Br. Be careful not to draw any structures by crossing one line over another
Calculate the volume of carbon dioxide formed at a pressure of 2.50 atm and a temperature of 1250C.
Solution 1.0C 1xF 1.8F 32F2 to carry out the desired conversion. When the absolute temperature is 400 K, what is the Fahrenheit temperature?
A 25.0 mL sample of 0.150M hydrocyanic acid is titrated with a 0.150M NaOH solution. What is the pH before any base is added? The Ka of hydrocyanic acid
Calculate the current strength needed to vaporize 12 g of compound X (Mw = 180.16 g/mol and a molar enthalpy of vaporization of 106.4 kJ/mol) in 30 seconds using a 16 volt battery.
the structure they gave me already has two nonbonding electrons on Bromine with no formal charge
An aerosol spray can of deodorant with a volume of 350 mL contains 3.0 g of propane gas C3H8 as propellant.
element z has two isotopes: one has mass number of 19.0 amu is 55.0% abundant,and the isotope with mass number 21.0 amu is 45.0% abundant. what is the average atomic mass for element Z?
suppose 2.8 moles of methane are allowed to react with 5 moles of oxygen? what is the limiting reagent?How many moles of CO2 can be made from this mixture? How many grams of CO2 would produce?
a 40.0 ml volume of ethane gas is heated from 25.0 celcius to 50.0 celcius. If the pressure remains constant, what is the final volume?
What amount of energy is required to completely ionize 6.2 grams of carbon atoms in the gas phase (C(g)) if the ionization energy of C(g) is 1086 kJ/mole?
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