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In the reaction (SO₂ + 2H₂S → 3S + 2H₂O), 44.3g of SO₂ are mixed with 44.3g of H₂S. Calculate the maximum mass of sulfur that could be formed.

1. Check if the equation is balanced, luckily this one is! 2. Check if any unit conversions are needed. All masses are in grams, so no problem there. 3. Using (moles = mass ÷ Mr), calculate: the no. of moles...
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Answered by Kundai V. • Chemistry tutor
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Describe the features of a benzene ring that define its reactivity. How does phenol differ from this?

The six carbon atoms in benzene are arranged in a planar ring, with one hydrogen atom bonded to each carbon. Each carbon atom has 4 valence electrons, and uses three of them to form single bonds with the two...
EF
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Use the periodic table to write symbols for the following species: 19 protons, 20 neutrons, 19 electrons

when looking at an atom on the periodic table, we see that within the box are two numbers: one at the top and one at the bottom. the top number represents the atomic number and the bottom number represents t...
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Answered by Alisha I. • Chemistry tutor
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25cm3 of a 0.10moldm-3 solution of sodium hydroxide reacts exactly in a titration with 15cm3 HCl. What is the concentration of the hydrochloric acid?

First, write a balanced chemical equation to determine the ratio of the reacting species: NaOH + HCl --> NaCl + H 2 O Sodium hydroxide and hydrochloric acid react in a 1:1 ratio, so the number of moles of...
EF
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Compare the basic ability between ammonia, ethyl amine and phenyl amine.

In terms of order of increasing basic ability, it is as follows. Phenylamine < ammonia < ethyl amine. The reason why phenyl amine (containing a benzene ring) is a weaker base than ammonia is because th...
Answered by • Chemistry tutor
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