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If the temperature probe is accidentally calibrated incorrectly and at 0.0C it reads -500. C, what temperature in Celsius will the probe read at 52. F
A student determines that a 5.869g sample of solid displaces 1.75 mL of water in a graduated cylinder. Another student measures a 7.254g sample of the same metal. What volume of water should the sec
Determine the molecular formula of an unknown perfect gas composed primarily of Nitrogen and Oxygen. At -3 degrees Celsius and when the pressure is 101.325kPa the density is 1.354 g/L.
In the ultramicro-boiling point determination, why is the b.p take just as bubble cease from the bell. what is inside these bubbles
A gas in a container is expanded by 0.25 of the original volume to a total of 15 dm^3 at constant temperature. The resultant pressure is 20 bar. What was the original pressure before the compression
It was determined in an experiment that a balloon filled with O2 gas with mass 32.0g in a 1.0 dm^3 volume exerts 21.6 atm of pressure at 0 degrees Celsius. Does Oxygen act like a perfect gas
For each of the following pairs of ions, determine whether a precipitate would form when solutions containing these ions are mixed and write the formulas of any precipitates that should form. Indica
A given PH meter can be read with a standard deviation of +- PH units throughout the range 2 to 12 calculate the standard deviation of [H3O+] at each end of this range
Given a solution that is prepared by combining 1.254 g of MnSO4 with 1.45Kg of H20, provide the ppm and % composition by weight of MnSO4.
A spherical ball of lead has a diameter of 4.0cm . What is the mass of the sphere if lead has a density of 11.34g/cm^3? (The volume of a sphere is (4\3) pi r^3 where r is the radius.)
Write down a balanced chemical equation for polymerization of a w-hydroxy carboxylic acid (HORCO2H)
How many mL of 2.56M solution of KCl are required to prepare 500.0 mL of 1.33 L of a 0.175M KCl solution
Draw the product that is formed when the compound shown below is treated with an excess of HCl. Draw only the organic ion.
The mass of a beaker is 7.839g. After 7.50 mL of hexane, C6H14, is pipetted into the beaker, the combined mass of the beaker and the heaxane sample is 12.806g. What is the measured density of hexane
If equal masses of both metals were transferred to equal volumes of water in seperated graduated cylinders, which graduated cylinder would have the greatest volume change. why.
Conversely, what is the percent H2SO4 in a 6.0M solution of H2SO4? Density of solution = 1.84g/cm^3
Predict what a plot of temperature versus the volume of distillate will look like for the simple distillation and the fractional distillation of
What five items must you consider when selecting the size and range of the scale units for the x- and y-axis
The volume percentage of CO2 in a mixture of that gas with N2 was determined by bubbling the mixture at 1.00 atm and 25*C through a solution of 0.0100 M NaHCO3 and measuring the pH.
Determine the pH of a solution of 10-3 M sodium formate. Formate is a byproduct of microbial metabolism, and can also serve as an energy source for anaerobic bacteria.
When X-rays with ? = 1.937 Å are used, the second-order Bragg reflection from a set of parallel planes in a(n) cesium crystal is observed at an angle
Caculate the mass of KHC8H4O4 (molar mass= 204344 g/mol) that reacts with 15 mL of the NaOH solution (0.16 molar solution of NaOH). Express this mass KHC8H4O4 to the correct number of significant fi
What is the reaction that happens between methanol and naphthalene? What is the balanced equation
For the elementary processes whose equations are given below, determine whether each is unimolecular or bimolecular and determine the rate law for each process. Pick the choice which is correct.
Based on their activation energies and energy changes and assuming that all collision factors are the same, which of the following reactions would be slowest in the forward direction