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1. A.What is the mass in grams of 2.75 moles of CH4 ?B. How many moles are in 365 grams of K2SO4 ?2. Using the bond energies below determine the value and signof delta H for the reaction:2H-H + O=O → 2H-O-HBond energies in kJ/mol: H-H 432.0 O=O 493 H-O 4603. 2C2H6 + 7O2 → 4CO2 + 6H2OA. How many moles of O2 are needed to react with 5.00 moles of C2H6?B. How many grams of H2O result when 85.0g of C2H6 react?4. When a mole of C9H20 is combusted it reacts with 14 moles of O2A. How many moles of CO2 are produced ?B. How many moles of H2O are produced ?
Determine how much of each type of solution must be used to fill the prescription and Special eye drop solution for a glaucoma patient must have a 2% active ingredient, a pharmacist is to prepare 15ml of it but the he has 10% solution & 1% solution..
Calculate approximately the value for the heat of sublimation of methane and calculate the pH for this solution
A balloon contains 400cm3 of helium at 25degrees and 1atm pressure. If the balloon bursts when the volume exceeds 800cm3. What would be the maximum temperature it could withstand at constant pressure?
Estimate the thickness of the lipid bilayer in a biological membrane - Estimating the thickness of a membrane by using bond distance.
What is the smallest possible integer coefficient of S in the combined balanced equation and compute the final pressure in the tank if nothing else is altered in the surroundings.
The density of mercury is 13.595 g cm -3 . What will be this value in SI units? Give the SI units and their symbols for the following physical quantities:
Calculate the numbers of moles of 2-butanol that needed to dissolved in ethenol(125gms) just to form 12 m 2 butanol soln also find out mass of 2-butanol ?
What is the order of the reaction if it takes 10 minutes, 20 minutes, 30 minutes to reach 75% conversion?
How can i find the pressure of oxygen if it's in a mixture of .40 moles of oxygen and .20 moles of nitrogen at 1.2 atm pressure
A sample of 57 grams of H 2 O with a temperature of sixteen degree celsius is combined to 260 grams of H2O at 90 degree celsius in an insulated container. Determine the final temperature after thermal equilibrium is reached?
I need help describing an experiment where one could measure the value of the extinction coefficient of a solution with a concentration (c mol/L) of chlorophyll in water for a given wavelength.
Constant external pressure of3.00 atm, followed by2) against a constant external pressure of 2.00 atm. Calculate q and w. (101.33 J = 1 L atm)
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