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Acetylene gas (C2H2) used in welding, produces an extremely hot flame when it burns in pure oxygen according to the reaction 2 C2H2(g)+5 O2(g) -→ 4 CO2(g)+2 H2O(g). How much CO2 is produced when 40000 g of C2H2 burns completely? Answer in units of g.
Calculate the freezing point of a solution of 1.65 g of naphthalene (C10H8) in 15.90 g of benzene.
hydrogen peroxide usually comes commercially as a 30 wv aqueous solution with a density of 1.106 gml. calculate the
Consider a 0.37M solution of each of the following salts in distilled water. Will the solution be acidic, neutral, or basic? You may need to reference a table of Ka and Kb tables values.
Explain what is the maximum mole percent of N2 in an air mixture that could be utilized by divers at depths up to 100.0 m below sea level without undue risk of nitrogen narcosis?
The charge carrier density of GaAs at 26oC is 2.25x10^6 cm-3. What is the charge carrier density (in cm-3) at 176 C? The bandgap of GaAs is 1.42 eV.
Compute the change in pH across the membrane that is needed at 25C to synthesize one mole of ATP from ADP and Pi under standard state conditions. rG'=31.4kJ for the synthesis of 1 mole of ATP mitochondrial =-0.15V
Are there certain gases that cannot be used to inflate an airbag due to it's chemical content?
Solid strontium hydroxide is added to a solution of nitric acid. How many moles of strontium hydroxide are needed to react completely with 500. mL of 0.40 M nitric acid?
How many grams of sodium sulfate will be formed if you start with 200 grams of sodium hydroxide and you have an excess of sulfuric acid
Explain what is the morality of NaOH if 41.67 ml solution is required to neutralize 0.2625 grams of pure H2C2O4*2H20
Question- Suggest a probable cause and potential solution for why the molecular ion peak was not observed for a biological molecule using LC with ESI coupled to a quadrapole MS.
Draw the kekule structure of each of the following compounds. if cis/trans isomers exist, draw both and indicate the geometry of each.
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