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Calculate the volume of CO2 gas produced by the combustion of 12.8 grams of ethanol by excess O2 gas at 30oC and 1.25 atm? The combustion of ethanol (C2H5OH) takes place by the following reaction equation.
N2+O2->2NO At 2000 degress C, Kc for the reaction is 4.1*10^-4 and delta H= 180.6Kj. What is the value of Kc at 65 degrees C
If 75.0 mL of 0.250 M HNO3 and 75.0 mL of 0.250 M KOH are mixed, what is the molarity of the salt in the resulting solution?
Problem- would a precipitate of silver acetate form is 22.0 mL of a 0.100 M AgNO3 were added to a 45.0 mL of 0.260 M NaC2H3O? Ksp of AgC2H3O2=2.3x10^-3
Consider a string with a length of 54.5 cm tied at both end (like on a stringed instrument). If the frequency of the first harmonic on the string is 256 Hz, determine the speed of the wave in the string. Post your answer in m/sand with 3 significa..
A sample of river water has a phenolphthalein alkalinity of 3.0 × 10-5M, a pH of 10.00, and a bicarbonate ion concentration of 1.0 × 10-4M. Calculate the total alkalinity for the sample in mmol/L.
Dental amalgam, a solid solution of silver and tin in mercury, is used for filling tooth cavities. Two of the reduction half-reactions that the filling can undergo are
Sketch all steps in the synthesis of each of the subsequent compounds using only organic starting material given plus any needed organic/inorganic reagents.
aluminum sulfate solution with water to a final volume of 1.450 L. Calculate the number of moles of aluminum sulfate before dilution.
1. Define normality. Give the normality for the following solutions:
When 2.56g of a compound containing only carbon, hydrogen, and oxygen is burned completely, 3.84g of CO2 and 1.05g of h20 are produced. What is the empirical formula of the compound
You have 500 mL of a 5.0 M solution of nitric acid HNO3 (63.01 g /?mol) dissolved in water. How many grams of nitrogen does the solution contain.
Indicate whether or not, each has a fixed shape or fixed volume. In addition, include their relative kinetic energies. Pictures can be drawn to assist in the explanation.
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