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The heat from an acetylene torch is produced by burning acetylene (C2H2) in oxygen. 2C2H2(g) + 5O2(g) ------------> 4CO2(g) + 2H2O(g) How many grams of water can be produced by the reaction of 2.40 mol C2H2 with 7.40 mol O2?
Nuclides below the valley of stability can become more stable through which of the following processes
Calculate the amount of heat required to raise the temperature of 72 g of H2O from 23 degrees celcius to 115 degrees celcius
Why do primary alkyl halides undergo SN2 substitution reactions more rapidly than do secondary or tertiray alkyl halides?
The osmotic pressure of this solution was 0.00178 atm at 25 C. Calculate the molar mass of hemoglobin, which is a molecular compound and a nonelectrolyte
Define internal energy and enthalpy. What is the difference between the two? List the following gases in order of increasing root-mean-square speed, all at the same temperature: H2, He, O2, Ne
A solution is prepared by dissolving 285 g of sucrose (C12H22O11) in 624 g of water. What is the vapor pressure of this solution at 30°C? (The vapor pressure of water is 31.8 mmHg at 30°C.)
Draw the structure of the product(s) of the reaction between (R)-3-methylhexan-2-one and phenylmagnesium bromide, followed by acidification. Use wedge and dash bonds to indicate stereochemistry. If more than one stereoisomer is formed, draw them a..
should be used to make 2.00 L of 0.0500 M solution? What kind of flask is used to prepare this solution?
Potassium chlorate can be decomposed to o2 and potassium chloride. Calculate the mass of potassium chlorate that must react to procedure 187.1 ml of dry 02 at STP.
Intially the vessel contains 3.0 moles of methane, 3.0 moles of xenon, and 4.0 moles of oxygen. What would the partial pressure of methane be if 2.0 moles of methane are added to the vessel? Assume that the volume and temperature of the vessel rem..
Calculate the volume of a pre-made solution of 1-decene (120 ?L) in absolute ethanol (250 ?L) that will afford 0.76 mmol of 1-decene
How would the absorbance of a NaSCN have been affected if .30 M Fe(NO3)3 had been used in place of .20 M. (In the case that the reaction has been completely driven to FeSCN2+
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