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The active ingredient in toothpaste is sodium fluoride, an anticavity agent. a 170 g tube of toothpaste lists the concentration of sodium fluoride a s0.24%. how many grams of sodium fluoride are in a toothpaste.
if 162 of wet is collected over water at 24 and a barometric pressure of 736 how many grams of have been consumed? the
Sketch the phase diagram of a pure substnace from the follwoing data. (A log P scale may help). There are two solid forms X and Y, which are both denser than the liquid, and Y is denser than X.
What volume of 1.40M NaOH solution must you add in order to prepare an acetate buffer of pH = 4.83? (The pKa of acetic acid is 4.76).
Consider the two gaseous equilibria- SO2(g) + 1/2O2(g) SO3(g) K1 2SO3(g) SO2(g) + O2(g) K2 The values of the equilibrium constants K1 and K2 are related
In which of the following organ does both physical and enzymatic digestion of lipids occur
The gas pressure in an aerosol can is 1.8 atm at 25 degrees celsius. if the gas is an ideal gas what pressure would develop in the can if it were heated to 475 degrees celsius?
a solution is made by dissolving 25g of nacl in enough water to make 1.00 l of solution. assume that the density of the
Calcein indicator is added to the solution. The sample then requires 10.00 mL of 0.0120 M EDTA for titration. Calculate for this sample (a) the molarity of the calcium present, (b), the molarity of the magnesium present, and (c) the total hardness..
Provide simple instructions for preparing 1.00 L of a solution having pH = 7.00 at 298 K. Your instructions should include the volumes of the solutions required. (1b) What is the buffer capacity of the resulting solution.
Separation of acetone from water by using MIBK - How much MIBK must be used if the final acetone concentration in the water-rich phase is 5 wt%?
a bacterial culture isolated from sewage produced mL of methane,ch4 at 30C and 749 mmHg. What would the volume of methane at standard temperature and pressure 10 C 760 mmHg'
In Complex III, electrons are transferred between ubiquinone and cytochrome c. Standard reduction potentials are, write a balanced equation for this reaction and calculate the overall cell potential and free energy change.
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