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A 0.45-g sample of aspirin is decomposed into its constituent elements as well as found to contain 0.27 g C, 0.020 g H, and 0.16 g O. Compute the mass percent composition
we will provide a standard solution of 0.100 m nacl and a solution of 20-fold diluted tonic water the unknown for your
A compound used to treat manic depressives has the formula Li2CO3. Which of the following is the correct name for this compound
Hardness in groundwater is due to the presence of metal ions, primarily Mg2+ and Ca2+. Hardness is generally reported as ppm CaCO3 or mmol/L Ca2+.
The bond dissociation energy of H2 and Cl2 are 436 and 242 kJ/mol, respectively. The Pauling electronegativity of H and Cl are 2.3 and 3.2. What is the HCl bond dissociation energy
How many milliliters of 0.5 mg/mL BSA will you use in each tube to get the range of 0-50 micrograms that you want?
Explain why acetone in the cyclohexane would invalidate the experiment?
Assume that O2(g) and H20(g) can be described by the van der Waals equation of state. Decide which between 1 mole of O2 and H20 has the highest pressure at the same value of T and V
Calculate What will be the volume of this gas sample at standard atmospheric pressure and
A cylindrical bar of metal having a diameter of (4.740x10^0) mm and a length of (9.9406x10^2) mm is deformed elastically in tension with a force of (1.281x10^4) N.
Find the pH and volume (mL) of 0.447 M HNO3 needed to reach the equivalence point(s) in titrations of each of the following
What is the pH of a 0.3656 M solution of the sodium salt of a weak acid with a pKa of 3.745? The answer is not pH = pKa + log(salt)
Why do aldehydes undergo nucleophilic addition faster than ketones? Explain based upon the transition state (applying Hammond's principle) and electronic and steric actors.
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