Chemistry, 12.05.2021 06:40 urfavgringo
Calcium hydroxide + sulfuric acid calcium sulfate + water If 294.98 grams of water are produced, how many grams of sulfuric acid were reacted?
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Write the chemical symbols for three different atoms or atomic cations with 27 electrons. asap!
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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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What is the wavelength of a 3*10^12 hz infrared wave a 3*10^20m b 1* 10^4m c 3*10^-3m d 1*10^-4 m
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Calcium hydroxide + sulfuric acid calcium sulfate + water
If 294.98 grams of water are produced, ho...
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