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Problem- Part a) A potassium bromide solution is 8.34% potassium bromide by mass and its density is 1.03 g/mL. What mass of potassium bromide is contained in 44.8 mL of the solution?
Part b) What mass of glucose (C6H12O6) should be dissolved in 12.0 kg of water to obtain a solution with a freezing point of -5.8oC?
I want you to explicate the chemistry in this problem
what mass of magnesium in reaction with an excess of hydrochloric acid is needed to produce 128 ml of hydrogen h2 gas?
Problem- What is the reduction potential at 25 C for the hydrogen electrode in each of the following solutions. The half-reaction is 2H+(aq)+2e??H2(g,1atm)
The half-equivalence point of a titration occurs half way to the end point, where half of the analyte has reacted to form its conjugate, and the other half still remains unreacted. If 0.260 moles of a monoprotic weak acid
A semiconductor of n-type is know to have an electron concentration of 3 x 10^18 m ^3 if the electron drift velocity is 100 m/s in an electric field of 500 V/m, calculate the conductivity of this material.
Density of aluminum is 2.7 g/cm^3 or 2.7 g/ml.How heavy (in grams) would be the coke can be instead of soda it would be filled in with aluminum. volume of a soda can is 303 ml
How are the atoms, covalent bonds, lone pairs, and electrons pair in a Lewis Structure of PCI3
The reaction, seen below, is carried out in a constant-volume flask. Initially only dimethyl ether is present and the pressure is 0.350 atm. What is the pressure of the system after 8.0 minutes? Assume ideal behavior.
A mixture of ammonium chloride and sand is placed in an evaporating dish and massed at 56.246g. The mixture is heated, driving off the ammonium chloride and massed again
how many moles of NaCl would be made by combining 20,000 moles of Na with 2 moles of Cl
Since phosphate ionization of 2.14, 6.86 and 12.4. you make stock buffer 500mM in 1L. You decide to make one stock pH 6.5 and the other ph 7.2 How many mmols of what type of phosphate componet do you add to each of these buffers?
What is the titer of the iodine solution of the .1000g sample of pure ascorbic acid 23.52 ml I2.
Problem- Estimate the delta S total, the total entropy change, for the following reaction at 25 degree Celsius.
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