Chemistry
Chemistry, 09.07.2019 08:30, yessy73

How many c2h4 molecules are contained in 45.8 mg of c2h4? the molar mass of c2h4 is 28.05 g/mol?

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Chemistry, 18.07.2019 14:30, smarty5187
Which reaction best represents the complete combustion of ethene? a.c2h4 + hcl → c2h5cl b.c2h4 + cl2 → c2h4cl2 c.c2h4 + 3 o2 → 2 co2 + 2 h2o d.c2h4 + h2o → c2h5oh?
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Chemistry, 04.09.2019 19:30, u8p4
Use the table below to answer the questions that follow. thermodynamic quantities for selected substances at 298.15 k (25°c) substance δh°f (kj/mol) δg°f (kj/mol) δs (j/k-mol) carbon c (s, diamond) 1.88 2.84 2.43 c (s, graphite) 0 0 5.69 c2h2 (g) 226.7 209.2 200.8 c2h4 (g) 52.30 68.11 219.4 c2h4 (g) -84.68 -32.89 229.5 co (g) -110.5 -137.2 197.9 co2 (g) -393.5 -394.4 213.6 hydrogen h2( g) 0 0 130.58 oxygen o2 (g) 0 0 205.0 h2o (l) -285.83 -237.13 69.91 the value of δs° for the catalytic hydrogenation of ethene to ethane, c2h4 (g) h2(g) → c2h6 (g)
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Chemistry, 08.10.2019 03:00, isabelperez063
The empirical formula of styrene is ch; its molar mass is 104.1 g/mol. what is the molecular formula of styrene? a) c2h4 b) c8h8 c) c10h12 d) c6h6 e) none of these i got c8h8 because i did mwef=n but it says the answer should be c2h4 how is that possible?
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How many c2h4 molecules are contained in 45.8 mg of c2h4? the molar mass of c2h4 is 28.05 g/mol?...

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