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The reuseable booster rocket of the U.S space shuttle emplot a mixture of aluminum and ammonium perchlorate for fuel. A possible equation for this reaction is:
3Al(s)+ 3NH4ClO4(s) --> Al2O3(s) + AlCl3(s)+3NO3(g)+ H2O(g)
What mass of NH4ClO4 should be used in the fuel mixture for every kilogram of Al.
If 80 {rm J} of heat are added to a pure gold coin with a mass of 13 {rm g}, what is its temperature change? Specific heat capacity of gold is 0.128 rm J/g ^circ C.
500.0 g of ammonia react with 51.0 moles of sulfuric acid to produce ammonium sulfate. How many moles of excess sulfuric acid are left over after the reaction is complete?
What mass of potassium oxalate is formed? If 1.1 g of potassium oxalate are isolated in the laboratory, calculate the % yield.
a sample of sodium hydrogencarbonate, NaHCO3 is contaminated with 5-10% NaCl. How should i carry out an experiment to determine the percentage purity of NaHCO3 ?
Consider the mechanism of a reaction betwwen trans-stilbene and bromine. What isomer do you expect to be the reaction product? Explain your answer. Does the outcome of the experiment support your analysis?
Consider the titration of a 25.0 mL sample of 0.100 M acetic acid using 0.100 M NaOH as the titrant. The value of the equilibrium constant for HC2H3O is Ka= 1.8 x10^ -5. Calculate the pH of the acid solution before any NaOH has been added.
Write the chemical equation for all the reactions both SN1 and SN2 involving primary and secondary substrates b) Rank the primary halide in order of increasing reactivity toward SN2
Calcium phosphide is used to make fireworks. Write a conversion factor that converts between moles of calcium ions in calcium phosphide, Ca3P2, and moles of Ca3P2.
Draw the acylation mechanism including all resonance forms of an electrophile aromatic substitution reaction if the carbon identified with an asterisk(*)
Assuming the heat absorbed by the styrofoam is negligible, calculate the expected final temperature. The specific heat of water is 4.184 J g-1 K-1.
When 0.500 mol of N2O4 gas is placed in a 2.50 L reaction vessel and heated to a set temperature, 65.3% of the N2O4 decomposes. Calculate Kc for the decomposition rxn.
Write the correctly balanced net ionic equation for the reaction the occurs NaOCl is dissolved in water and calculate the numerical value of equilibrium constant for this reaction.
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