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Calculate the final temperature of a mixture of 110.0 g of ice initially at -10.5 degrees Celcius and 396.0 g of water initially at 93.5 degrees Celcius.
Water expands on freezing. Since water is the principle ingredient in soft drinks when the soft drink freezes it will rupture the can.
Describe the Rutherford's model of the atom and compare it with the model proposed by his student Niels Bohr. What is meant by 3p^3
What is the initial sulfur dioxide concentration (in mol/L or M)?
A sample of gas has a volume of 3.40L at 10.0C what will be its volume be at 100C pressure rremaining constant
If a sample of 0.230 grams of KCN is treated with an excess of HCL, calculate the amount of HCN formed, in grams.
What is the initial (before any reaction takes place) lead nitrate concentration when 4.0 mL of 0.034 M lead nitrate is added to 11 mL of 0.0052 M sodium chloride
A distance of 200 ft must be taped in a manner to ensure a standard deviation smaller than ± 0.03 ft. What must be the standard deviation per 100 ft tape length to achieve the desired precision?
When pentane C5H12 burns in oxygen, it produces carbon dioxide and water. If 85.5 g of pentane is burned, what voulume of carbon dioxide is produced at STP (The density of CO2 is 1.997 g/L.)
What is the concentration of hydroxide ions in pure water at 30 degrees C, if Kw at this temperature is 1.47 x 10 to the -14th
why are methylene chloride and ethanol used to recrystallize trans-1,2-dibenzoylethylene
Sulfurous acid, H2SO3, is a weak diprotic acid (pKa,1=1.89 and pKa,2=7.21 at 25oC). What is the pH of 0.121 mol/L H2SO3(aq) at 25oC.
Find the Fourier transform of the function exp(-πx2/ σ2). Explain how the width and height of the bands are inversely related in the two domains. Why should this be so
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