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Acetylene gas (ethyne hc=ch) burns in an oxyacetylene torch to produce carbon dioxide and water vapor, and the heat needed to weld metals. the heat of reaction for the combustion of acetylene is -1259 kjmol. (a) calculate the c=c bond energy, and compare your value with that in the table. (b) when 395.0 g of acetylene burns, how many kilojoules of heat are given off? (c) how many grams of co2 form? (d) how many liters of o2 at 298 k and 15.6 atm are consumed?
Write a balanced chemical reaction for photosynthesis (accounting for both the light and dark reactions). Compare the pathways of photosynthesis and oxidative phosphorylation.
Predict whether the following compounds will undergo the benzoin condensation, faster slower than benzaldehyde or give no reaction. You must think about the intermediate and the nucleophile
Explain how the existence of isotopes is related to atomic masses not being whole numbers.
a sample of helium effuses through a porous container 6.5 times faster than does unknown gas x?what is the molar mass
Draw thw active site of an enzyme that contains a macrocycle coordinated to a transition metal. Explain the function of the enzyme
an aqueous solution is 22.0 by mass silver nitrate agno3 and has a density of 1.22 gml. what is the molarity of silver
The combustion of 58.0 g of butane (C4H10) produces 158g of CO2. What is the percent yield of the reaction
Copper has a specific heat of 0.092 cal/(g·°C). When 52.7 cal of heat is added to a piece of copper, the temperature increases from 22.4°C to 38.6°C. What is the mass of the piece of copper
a 75 ml solution of 0.030 m caoh2 is titrated with 0.035 m hcl. calculate the ph of the mixture after 60 ml of hcl have
Which atom in each of the following pairs has a larger radius. (a) Na or K (b) V or Ta (c) V or Zn (d) Li or Ba
the critical constants of ethane are pc 48.20 atm vc 148 cm3mol and tc 305.4 k. calculate the van der waals
Order of a reaction, Consider a kinetic study of oxidation of a new plastic stabiliser being proposed for the automobile industry. Stabiliser + H+ + O2 ----> Byproduct
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