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How do we calculate the molality of H202, mole fraction of H202 and the molarity of H202 if an aqueous solution H202 is 30% by mass and has a density of 1.11g/ml
The four-year government bond creates annual coupon payments of 4.0% and offers the yield of 2.0% annually compounded. Assume that bond yields 1.0% at the end of year. What return would bondholder e
Find out the difference between 2Na and Na2, when writing a complete ionic equation, can i use these interchangeably?
In freezing point experiment, is it advisable to calculate the freezing point of pure paraffin with one thermometer and the freezing point of the solution with a different one? Discuss.
A quick approximate freezing point determination indicates that 4g of salt dissolved in the 100g of water produces a solution which freezes at about -28 degree Celsius. A salt is known to be alkali
Mr. Kraso was not in town. If the crime was committed, then Mr. Krasov was in town. Hence Jose did not take jewerly. Utilize letters J, L, C, T.
Determine the actual pressure of the gas when collected over water: Barometric reading: 742 mm, Temperature: 24°C, Level of water inside measuring the tube: 20.4mm lower than outside.
The first order rate constant for the decomposition of dimethyl ether (CH3)2O--->CH4 + H2 + CO (reactant and products all in gas phase) is 3.2X10^-4/s at 450C. The reaction is carried out in a co
Given the whole number N which is not the square, how do we find the square such that when we multiply N and add 1, result is also a square? Determine the general solution to problem to find more squ
Explain which the oxidizing agent is and find out the reducing agent? Discuss which is the species being oxidized? Determine the oxidation number for the species being reduced?
A key elementary process in the destruction so stratospheric ozone from nitrogen oxides in jet exhaust is the reaction
A student carried out a dehydration experiment by using the MgSO4 nH2O. The student placed an evaporating dish which is having 3.8457 g of MgSO4nH2O in an oven at the 110 deg C.
A photon-powered spacecraft of mass 10.0 kg emits radiation of the wavelength 225 nm with a power of a 1.50 kW entirely in the backward direction. To what speed will it have accelerated after 10.0
Using direct method (not Laplace transform) determine general solution to the problem. Use Laplace transform to solve corresponding initial value problem.
Determine the de Broglie wavelength of:a mass of 1.0 g traveling at 1.0 cm/s a He atom traveling at 1000 m/s (typical speed at room temperature)
Suppose you might consider whether the de Broglie wavelength is a significant fraction of the likely size of the object in question: for classical objects.
An aqueous solution is made by dissolution of the (0.009 mol) of (KOH) and (0.045 mol) of butanoic acid in the 9 kg of water.
In a particular reaction, 6.0 moles of NH3 were formed. Determine how many moles of H2 and determine the numbers of moles of N2 were reacted to form this amount of NH3?
Determine the initial molar concentration of I- (at time= 0, before reaction) if 4.0 mL of 0.30 M KI is mixed with 1.0 mL of demonized water, 1.0 mL of buffer solution, 1.0
Discuss why does sweet & low cause a persons scalp to stop feeling itchy while there is tint on their hair (and scale), without causing the tint to stop processing?
The toxic gas hydrogen cyanide, HCN is water soluble. Illustrate a simple picture of HCN and H2O molecules and find out all of the interactions that may occur between the different molecule
Assume you have available 2.50 L of a solution (d=0.9767 g/mL) that is 13.8% ethanol (C2H5OH), by mass. From this solution you would like to make the maximum quantity of ethanol-water antifreeze sol
Why is the volume of hexane not a factor in forming the monolayer of stearic acid? The stearic acid solution is >99% hexane. Stearic acid is also soluble in acetone, explain which has a lo
The recommended procedure for preparing a very dilute solution is not to weigh out a very small mass or measuring a very small volume of a stock solution. A sample of KMnO4 was dissolved in the wate
Calculate the molality and molarity of the acid solution if the concentrated sulphuric acid we use in the laboratory is 98% H2SO4 by mass. The density of the solution is 1.83g/mL