Choose the most efficient and accurate way to prepare a sample containing 0.75 moles of iron (fe) atoms. group the iron atoms in bundles of 1000 atoms so they can be counted faster. take a bar of iron that contains one mole of atoms, measure the length carefully, and remove 1/4 of the bar's length. weigh 41.89 grams of iron. count 4.5βββ1023 fe atoms.
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Chemistry, 22.06.2019 05:50
Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3 -> a2cr(no3)3 + a3ag2so4
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Chemistry, 22.06.2019 07:20
2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here
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Chemistry, 22.06.2019 10:30
Consider the following reactions. (note: (s) = solid, (l) = liquid, and (g) = gas.) mg(s) + Β½o2(g) β mgo(s) + 146 kcal/mole h2(g) + Β½o2(g) β h2o(g), Ξ΄h = -57.82 kcal/mole what type of reaction is represented by the previous two examples?
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Choose the most efficient and accurate way to prepare a sample containing 0.75 moles of iron (fe) at...
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