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An example of a nuclear equation and of a chemical equation. In what ways are the two equations alike? Different?
Question- Given that the molar mass of H3PO4 is 97.994 g/mol, determine the number of grams of H3PO4 needed to prepare 0.35 L of a 1.25 M H3PO4 solution
A force vector of F=1i-2j in newtons applied to an object and the force makes it move d=5m in North-West direction.(ie 45degree of north west).
Question- The infrared spectra of benzoin and benzaldehyde are given in this experiment. Interpret the principal peaks in the spectra.
A 64 g piece of ice at 0 degrees celsius is added to a sample of water at 9 degrees celsius. all of the ice melts and the temperature of the water decreases to 0 degrees celsius. How many grams of water were in the sample?
Problem- When 2.825 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 9.550 grams of CO2 and 1.955 grams of H2O were produced. In a separate experiment, the molar mass of the compound was found to be 78.11 g/mol. Determ..
A 7.3648 g sample of an oxide of mercury, when heated in a stream of hydrogen, produces Hg() and 0.6126 g H2O. What is formula for the compound?
Does purified aspirin appear to be purer than crude aspirin? What is your evidence?
A new potential heart medicine, code-named X-281, is being tested by a pharmaceutical company, Pharma-pill. As a research technician at Pharma-pill
Problem-Sodium sulfate is slowly added to a solution containing 0.0500 M Ca2 (aq) and 0.0280 M Ag (aq). 1) What will be the concentration of Ca2 (aq) when Ag2SO4(s) begins to precipitate
Complete the following neutralization reaction, and identify the strong acid, strong base, weak acid and/or weak base. a. CH3COOH + NH4OH
A sample of an unknown gas effuses in 12.8 min. An equal volume of H2 in the same apparatus at the same temperature and pressure effuses in 2.11 min. What is the molar mass of the unknown gas
Question- The solubility product for MgF2 is Ksp= 8.0 E-8. Calculate the molar solubility's, of MgF2 in a solution that is 0.10M in NaF. The correct answer is supposed to be 8.0 E-6 M
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