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1. Which occupies a larger volume, 600 g of water (with a density of 0.995 g/cm3) or 600 g of lead (with a density of 11.35 g/cm3)? Energy Units
2. You are on a diet that calls for eating no more than 1200 Cal/day. What is this energy in joules?
3. A 2-in. piece of chocolate cake with frosting provides 1670 kJ of energy. What is this in dietary Calories (Cal)?
The iron (55.847 g/mol) in a 700.0 mL sample of a natural water was determined by precipitation of the cation as hydrated Fe2O3. The precipitate was filtered
rate of reaction for 8h2s 4o2 -gt 8h2o s8 if started with 21.35g of h2s and 15.36g of o2. what is the limiting
The molecule ethanol (CH3CH2-OH) is very soluble in water. What intermolecular attraction is responsible for its solubility
A bimolecular reaction is found to be 1st order with respect to both reactants. If the rate of reaction is 1.87 mol/L ·s at 25 oC, what is the reaction rate if both reactant concentrations are doubled? A) 7.48 mol/L ·s B) 46.8 mol/L ·s C) 1.87 mol..
Calculate the pH at equivalence point when 40.0 ml of 0.50 M aniline is titrated with 30.0 ml of 0.67 M HBr. For aniline Kb=3.8x10exp-10
Question- A 100.0 ml solution of 0.50M Cd(NO3)2 is mixed with 100.0 ml of 6.0 M ammonia solution. What is [Cd2+] in the resulting mixture?
Question- Calculate the pH and the pOH of an aqueous solution that is 0.035 M in HCl(aq) and 0.060 M in HBr(aq) at 25°C.
How many coulombs are required to plate a layer of chromium metal 0.23 mm thick on an automobile bumper with a total area of 0.32 m2 from a solution containing CrO42 The density of chromium metal is 7.20 g/cm3.
if 16.87 grams of nitric acid are reacted with a large amount of aluminum metal what volume of hydrogen gas would be
The best design for rockets is one in which both fuel materials run out at the same time to minimize excess mass. If the total mass of both components in a decaborane/oxygen rocket must be 3.011E+6g, what mass of liquid oxygen should be used
What is the uncertainty in the energy of the excited state. What is the percentage uncertainty if the energy is measure from the ground state
The specific heat of aluminum is 0.21 cal g°C. How much heat is released when a 10 gram piece of aluminum foil is taken out of the oven and cools from 50 to 10 °C?
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