A simple pure zinc has a mass of 4 50g calculate its volume
[DOCX File]Chemical Reactions and Stoichiometry - aceh.b-cdn.net
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A balloon at room temperature and pressure, is initially filled with 0.10 moles of helium gas and has a volume of 2L. Calculate the final volume of the balloon if more helium is added so that the final number moles of helium is 0.15. k = V n k = 2 0.10 = 20V = kn V = 20 x 0.15 = 3 L Ideal Gas Law . PV = nRT
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55) Calculate the atomic mass of element "X," if it has 2 naturally occurring isotopes with the following masses and natural abundances. X-107 106.90509 amu 51.84% X-109 108.90476 amu 48.46%
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Calculate the mass of Iron formed. How much of the excess reagent is left over at the end of the reaction? Type 10: Analysis of hydrated salts. Question 20. Copper (II) sulfate is found as a hydrated salt, CuSO4.xH2O. A technician carefully heats 2.50g of the salt to a constant mass of 1.60g. a) What is meant by constant mass?
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2g H2 has a volume of 24000 cm3 (volume of formula mass in g) so scaling down: mass Mg needed = 24 x (300/24000) = 0.3g . Example 12.9.6: A small teaspoon of sodium hydrogencarbonate (baking soda) weighs 4.2g. Calculate the moles, mass and volume of carbon dioxide formed when it is thermally decomposed in the oven.
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