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What is the total pressure in the flask at 22*C if a gas is made up of 9.00g of hydrogen gas and 165.0g of neon gas in a 75.0 L flask.
What weight of pyrite ore must be taken for analysis so that the BaSO4precipitate weight obtained will be equal to one-half that of the percent S in the sample when a sample of pyrite ore (impure F
Explain which method of extraction is more efficient from them? How do you know? And also discuss which one will have darker or lighter color and which one will have higher or lower absorbance?
Suppose you are to dissolve each of the solids below separately in the 25 mL of tert-butyl methyl ether and wash the ether layer with two 10 mL portions of water.
Ten grams (10.000g) of oxalic acid, MW=90.04, is added to one liter of water. The acid dissociation constants for oxalic acid are: Ka1 = 5 x10-2
Determine the reaction rate at 1000K when the concentration of NO is increased to 0.10 M, while the concentration of H2 is 0.010
A 33 L cylinder which is having the helium gas at a pressure of 21.2 atm is used to fill a weather balloon in order to lift equipment into the stratosphere. To what maximum pressure could a
Estimate the molarity of the sodium hydroxide solution. Calculate the heat (calories) produced by the solution of 4.5 g of NaOH. When 4.5g of sodium hydroxide (NaOH) was dissolved in the 150g of wat
When 0.5F ofN2CO3 is added to a clear saturated solution of BaSO4 a precipitate of BaCO3 is observed to produce. A handbook lists the molar solubility of BaCO3 as 7.1x10^-5 and the molar solubility
Determine the heat formed by the solution of 4.75g of NaOH. Determine the number of calories that would be produced if one mole of sodium hydroxide was dissolved.
Discuss how much energy is needed to warm the15.0g of ethyl alcohol from 4C to 25C? (Sp heat ethyl alcohol is 0.590 cal/g-C)
Write down the balanced net ionic equation for the reaction that occurs when the solid potassium hydrogen carbonate reacts with the hydrochloric acid.
A student is required to generate 90.0 mL of carbon dioxide at the 750mm Hg and 21*C using the potassium hydrogen carbonate and HCl.
The mixture was stirred until all of theNaHCO3 dissolved. 3.5 g of solid NaHCO3 was added to 50.0 g of water in a calorimeter. The temperature of the water changed from 20.1*C to 16.7*
How can compute the three 1L flasks, all at standard pressure and temperature? If flask A contains NH3 gas, flask B is having NO2 gas, and flask C which is having N2 gas.
Determine what volume of water should be added to 50 mL of HNO3having the specific gravity of 1.5 g/mL and 63% by weight to make a 1M solution?
Calculate how many joules of energy are absorbed by the silver? (Cp Ag = 25.3 J/mol-K, 1 mole of silver (Ag) has a mass of 107g) if a piece of silver with mass of 20.0 g is immersed in the 25.0 g of
At 80.00 degrees Celsius (°C) a 45.71 gram piece of iron metal is added to 57.26 grams of water in a perfectly insulated container. Find out the final temperature of the water and iron m
What is the atomic weight of metal M which is having a sample of metal oxide (0.4150g) with the formula M3O3 is quantitatively converted to a metal sulfide, MS, yielding 0.4570g.
A mixture of H3PO4 and HCl is titrated with the 0.1000 M NaOH. The first end point used methyl red as an indicator and the end point occurred at the 35.00 mL.
Determine the pressure which is exerted by the 4.37 moles of molecular chlorine confined in a volume of2.45 L at 38 degrees C. Contrast the pressure with that measured using the ideal gas equation.
A 0.7026 g sample of an unknown acid needs 40.96 mL of0.1158 M NaOH for neutralization to a phenolphthalein end point. There is 1.22 mL of 0.1036 M HCl used for back titration.
If the pressure of the air parcel is 975mb, what would be the final volume of this air parcel? Consider an air parcel of 1 m^3 that undergoes expansion cooling where the temp drops by 5 deg