Consider the reaction.
2 upper C (s, graphite) plus upper H subscript 2 right arrow uppe...
Chemistry, 01.03.2020 21:03 tatertottheyoungin
Consider the reaction.
2 upper C (s, graphite) plus upper H subscript 2 right arrow upper C subscript 2 upper H subscript 2 (g).
Standard Enthalpies of Formation
Substance
DHf (kJ/mol)
C2 H2 (g)
226.73
CaCO3 (s)
โ1206.92
CaO (s)
โ635.09
CO (g)
โ110.525
CO2 (g)
โ393.509
H 2 O (I)
โ285.8
H 2 O (g)
โ241.818
C (s), diamond
1.895
C (s), graphite
0.0
Based on the equation and the information in the table, what is the enthalpy of the reaction?
Use Delta H r x n equals the sum of delta H f of all the products minus the sum of delta H f of all the reactants..
โ453.46 kJ
โ226.73 kJ
226.73 kJ
453.46 kJ
Answers: 1
Chemistry, 21.06.2019 20:10
Which statement is true about the part of the electromagnetic spectrum that human eyes can detect? it contains only the colors of the rainbow and television waves. o it is divided into seven ranges of wavelengths. it contains ultraviolet, visible, and infrared light. it is divided into nine ranges of wavelengths.
Answers: 2
Chemistry, 22.06.2019 04:30
This question is about electrolysis. metal spoons can be coated with silver. this is called electroplating. suggest one reason why spoons are electroplated?
Answers: 1
Chemistry, 22.06.2019 14:30
100 grams of molten lead (600ยฐc) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21ยฐc), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/gโ
ยฐc; the latent heat of fusion and the melting point of lead are 2.45 ร 104 j/kg and 327ยฐc, respectively.)
Answers: 1
History, 29.08.2019 21:40
Biology, 29.08.2019 21:40
Mathematics, 29.08.2019 21:40
Mathematics, 29.08.2019 21:40
Mathematics, 29.08.2019 21:40
Social Studies, 29.08.2019 21:40
Mathematics, 29.08.2019 21:40
Physics, 29.08.2019 21:40
Biology, 29.08.2019 21:40