Chemistry

Chemistry, 12.07.2019 20:30, gamerdoesart

What is the percentage composition for hydrogen in the compound c2h4

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Chemistry, 22.06.2019 18:30, joshuasanders7490

What is the percentage of hydrogen in c2h4

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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, 17.09.2019 04:30, oomale

Abinary compound of boron and hydrogen has the following percentage composition: 78.14% boron, 21.86% hydrogen. if the molar mass of the compound is determined by experiment to be between 27 and 28 g, what are the empirical and molecular formulas of the compound?

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Chemistry, 26.10.2019 02:43, jxcxhxwxll

1) analysis of an organic compound indicates that it has a percentage composition as follows: 40.7% carbon; 5.0% hydrogen; 54.3% oxygen. when this compound is vapourized, 35.0 ml of the vapour has a mass of 0.184 g. determine the molecular formula for this compound. 2) a gaseous compound is found to have the following composition: 30,5% nitrogen and 69.5% oxygen. the molar mass of the gas if found to be 91.8 g/mol. what is the molecular formula of this gas? 2)

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