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Problem- When 70.0 mL of 0.15 M formic acid, HCHO2, is titrated with 0.30 M sodium hydroxide, what is the pH at the equivalence point? (Be sure to take into account the change in volume during the titration.) Select a good indictator for this titration.
pH =
A good indicator would be a) bromocresol purple b) thymolphtalein c) methyl orange d) methyl green e) Cresol red
I have read my textbook moreover I still don't understand so please provide me a very condensed, simple to know answer?
an unknown metal of density 7.65 gcm3 occurs in a face centered cubic unit cell. the radius of the atom is 126 pm. what
Calculate the work done the following equation when 1 mole of hydrogen gas is collected at 273 K and 1.0 atm. Neglect volume changes other than the change in gas volume.
KCl has the same crystal structure as NaCl. Calculate the volume of the unit cell, given that ionic radii are K+ = 152 pm and Cl- = 167 pm. Compare the density of KCl. Which has the larger unit cell, NaCl or KCl?
Suppose y was measured five times and average of these five measurements was 3.24. What is the uncertainty in x based on these five measurements
a titanium bicycle frame contains the same amount of titanium as a titanium cube measuring 5.6cm on a side. use the
Calculate the molarity of a solution made by dissolving 12.5 grams of Na2CrO4 in enough water to form exactly 550 mL of solution.
Using Phenyllithium as well as any necessary organic or inorganic reagents, suggest proficient syntheses of each of the following:
The osmotic pressure was found to be 1.86 torr at 25°C. What is the molar mass of the polyethylene. R= 62.4 L-torr per mol Kelvin
High levels of ozone (O3) make rubber deteriorate, green plants turn brown, and cause people to have difficulty breathing. Calculate delta G at 298 K for the formation of 1 mole of O3 from O2 in urban smog, where [O2]=0.210 atm and [O3]=5.00x10^-7..
Calculate the molarity and mole fraction of acetone in a 1.82 molality solution of acetone in ethanol. Density of acetone is .788 g/cm^3. Density of ethanol is .789 g/cm^3. Assume that the volume of acetone and ethanol add.
draw the molecule by placing atoms on a grid and connect with bonds for when the cyclopentane is exposed to Br2 in presence of light.
Calculate the molar mass and density of dry air at 0 °C and 1.0 atm. Assume ideal behavior and use two significant figures
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