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How many grams of Fe2O3 contain 15.0 g of iron?
If the sample reacted completely and produced 2297 mL of carbon dioxide at 24.88 °C and 736.6 mm Hg, what was the mass percentage of MgCO3 in the mixture
if 69.5 kj of heat is applied to a 1012-g block metal, the temperature of the metal increased by 11.4 degrees celsius. what is the specific heat gravity?
In solid nickel the atoms are so tightly packed they touch each other. Using geometry and the equation 4r = a(2)1/2 and a = 3.524 calculate the value for r, the radius of a nickel atom.
the alcohol content of hard liquor is normally given in terms of the proof which is defined as twice the percentage by
How many grams of oxygen are needed to react completely with 1290 grams of pentanone (C5H10O)?
The standard molar heat of vaporization of her water is 40.79 kJ per mole. What mass of mass of steam is required to release 500 kilojoules of heat energy upon condensation?
what impurities do you think are probably in your crude aspirin product? where do those impurities go in the
Calculate the work (in kJ) done on the system when 1.10 moles of hydrogen gas are produced from the reaction of sodium in excess water at 298 K: 2Na(s) + 2H2O(l) ? 2NaOH(aq) + H2(g)
The number of moles in 15.39 g of C2H6O (molar mass =46.1 g/mol) is ,You transfer a sample of gas at 17 degrees C from a volume of 4.71 L and 1.10 atm to a container at 37 degrees C.
Integrated Rate Law
A 64gram piece of ice at 0 celsius is added to a sample of water at 9 celsius. All of the ice melts and the temperature of the water decreases to 0 celsius. how many grams of water were in the sample?
A hydrate of calcium chloride contains 49.3% water and has a formula weight of 219 g/mol. Calculate the molecular formula of the hydrate.
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