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Bromothymol blue is a common acid-base indicator. It has a Ka equal to 1.6 X 10^-7. Its unionized form is yellow and its conjugate base is blue. What color would a solution have at pH=5.8?
Typically an adult will inhale 2.1 L of air per breath. What mass of ozone is taken into the lungs per breath by an adult breathing air containing 1.57 x 10^-4 micro(ug) grams of ozone per cm^3 of air?
Using the Clausius-Clapeyron Equation, estimate the melting temperature of ice below an adult wearing ice skates? How might this help someone skate? Some useful data: vL = 1.00 × 10?3 m3/kg hSL = 333.4 kJ/kg.
Averge frequency of light emitted a 100 w lightbulb is 5.5x10^14 Hz. How many photons per second does the light bulb emit?
Predict whether the equilibrium favors the reactants or the products for each of the following reactions: a)H3PO4(aq)+H2O(l) H3O^+(aq)+H2PO4^-(aq). b)CO3^2-(aq)+H2O(l) OH^-(aq)+HCO3^-(aq) c)HS^-(aq)+H2O(l) H3O^+(aq)+S^2-(aq) d)HCN(aq)+CH3-NH2(aq..
Many carbohydrate linkages are cleaved by hydrolytic enzymes, which is different from glycogen phosphorylase that uses phosphorolysis. There are two acceptable mechanisms for hydrolysis of the glycosidic bonds
A 0.150 M aqueous solution of the weak inorganic acid HA was prepared from the pure compound, and three 50.0 mL aliquots were transferred to 100.0 mL volumetric flasks.
At 123?C, the pressure of a sample of nitrogen is 1.45 atm. What will the pressure be at 267?C, assuming constant volume?
Naproxen belongs to a class of pahrmaceuticals, the (S)-(+)-enantiomer is the desired pharmacological activity while the (R)-(-) -enantiomer is potentially a liver toxin. Due to this, commercial Naproxen is sold as the S-(+)-enantimoer with high l..
A 12-oz (355-mL) Pepsi contains 38.9 mg caffeine (molar mass ?? 194.2 g/mol). Assume that the Pepsi, mainly water, has a density of 1.01 g/mL.
Acid Mixture Problem, From a full 50-liter container of a 40% concentration of acid, x liters is removed and replaced with a 100% acid.
Magnesium oxide (MgO) has the rock salt crystal structure and a density of 3.58 g/cm3. Determine the unit cell edge length.
Ka for this species is 10-4 and Kb is 10-8. Nonetheless, the Ka and Kb reactions proceed to nearly the same extent when NaHA is dissolved in water.
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