Chemistry, 02.10.2019 03:00 miwptv105own5u8
When propane (c3h8) is burned in air (o2), it completely combusts and produces water (h2o) and carbon dioxide (co2). how many moles of water would be produced if 5 moles of propane were combusted?
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Chemistry, 21.06.2019 23:10
Which statement describes both homogeneous mixtures and heterogeneous mixtures?
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Chemistry, 22.06.2019 07:30
What is i fracture in the crust called when land move up, down or sideways
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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.)
Answers: 1
When propane (c3h8) is burned in air (o2), it completely combusts and produces water (h2o) and carbo...
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