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If a cube with edges of 1.000 cm weighs 25.68 g, what would themass of a cube of the same material with sides 2.57 cm in length be?
to determine the partial pressure and the total pressure using daltons law of partial pressures.a mixture of gases
An equilibrium mixture contains N2O4 , (P= 0.27 ) and NO2 (P= 1.0 ) at 350 K . The volume of the container is doubled at constant temperature.
If a space probe weights 39,200 N on the surface of earth, what will be the mass of the probe on the surface of mars.
Ribosomes have three tRNA bind sites. What are they called. Describe the elongation phase of prokaryotic translation and indicate the roles of these sites therein
Heavy water has a formula D2O, and semi-deuterated water has the formula DHO, where D stands for deuterium. Using the data below, etimate the percentages of D2o and DHO present in natural water
measured in a 1.00-cm pathlength cuvette, has an absorbance of 0.321 while the reagent blank in the same cuvette has an absorbance of 0.014. What would be the absorbance reading of these two solutions if measured in a cuvette with 5.00 cm pathleng..
the concentration of copper(II) sulfate in a brand of fertilizer is 0.07% by weight. If a 21.5 g sample of this fertilizer is dissolved in 2.0L solution, what is the molar concentration of Cu2+.
one can of soda pop is 355 ml. find out the number of tartrazine in milligrams that are utilized while drinking one can
A sample weighing 3.183 g is a mixture of Fe2O3 (molar mass = 159.69) and Al2O3 (molar mass = 101.96). When heat and a stream of H2 gas is applied to the sample
How to calculate the pH of 0.375 L of a 0.18 M acetic acid-0.29 M sodium acetate buffer before and after the addition of (a) 0.0060 mol of KOH and (b) 0.0060 mol of HBr.
Consider the titration of 43.2mL of .240M HF with .220M NaOH. Calculate the pH at halfway to the equivalence point. Ka = 3.5 * 10^4
What is the pH of .3M HCl after 10mL of .3M NaOH is consecutively added until 120mL. Where is the Equivelance point
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