Chemistry, 18.03.2021 17:40 MarsBars8798
Find the number of grams of sodium chloride required to make a 0.250 m solution containing 275.0g or water(solvent)
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Give the orbital configuration of the phosphorus (p) atom.
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What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5
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Chemistry, 22.06.2019 11:40
Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)
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Chemistry, 22.06.2019 15:20
Which description best characterizes the motion of particles in a solid?
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Find the number of grams of sodium chloride required to make a 0.250 m solution containing 275.0g or...
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