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What is the molarity of lead(II)nitrate solution if 50.00ml of the lead(II)nitrate solution is reacted with aluminum, producing 3.580g of dry metal? Include the balanced molecular equation.
What is the total number of joules absorbed by 65.0 g of water when the temperature of the water is raised from 25.0 degrees celsius to 40 degrees celsius?
1. the problem below concern cacl2.a. 0.135 gram of cacl2 is dissolved to 250 ml. what is the prepared molarity of the
How much KClO3 in grams is needed to generate 7.50L of O2 at pressure of 1.00atm and temp of 298K?
The standard free energy of formation of gaseous hydrogen iodide is 1.30 kJ/mol at 25°C. Find Kp for the reaction 2HI(g) -> H2(g) + I2(s) at this temperature.
Draw the structure of an alkane or cycloalkane that has more than three but fewer than ten carbon atoms, and only primary hydrogens.
the equation of line determined from a Beers law plot is y=0.195x+0.4, what is the resistance of an unknown water sample if the assumed concentration is 1.8ppm. please show your work.
How many moles of HF (ka= 6.8 X 10^-4) must be present in 0.200L to form a solution with a pH of 3.25
which is connected to 2 oxygen atoms, one with is sp^3 and one sp^2 hybridized and so both oxygens have 2 lone pairs of electrons. All other single bonds consist of hydrogen.
An unknown gas X effuses 1.65 times faster than C3H8. What is the molecular mass of gas X?
.914g sample of stannous flouride gives a 1,078g precipitate of stannous phosphate. calculate the theoretcial yeild?
It is assumed that the relative standarddeviation of the method is sr ? s = 4 ppt forcarbon and 6 ppt for hydrogen. The means of the reported resultsare 68.5% C and 4.88% H. At the 95% confidence level, is there anyindication of systematic error i..
sulfur is used in the production of vulcanized rubber detergents dyes pharmaceuticals insecticides and many other
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