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If 2.0 mol of C3H8 and 14.0 mol O2 are placed in a closed container and they react to completion. How many moles of each compound are present?
How many kilojoules of energy are needed to convert 100 g ice at 10.0C to water at 20.0C? (the specific heat of ice at 10C is 2.01)
Calculate percent composition of the mixture containing 140.0 g of chalk, 80.5 g of sugar and 45.3 g of flour.
Determine the theoretical mole ratio of NaCl to NaHCO3.
In one student's experiment, the tin can containing 100 mL of water described in the Part 2 Procedure "Energy Content" showed a temperature increase of 9.65°C. Determine the energy content of t
In an experiment carried out at 10 degrees celcius, the initial concentrations were [H2]=[Cl2]=[HCl]=2.25 mol/L. What is the equilibirum concentration of HCl?
What is the literature Ka value of potassium hydrogen tartrate
Gaseous acetylene ({rm C}_{2}{rm H}_{2}) reacts with oxygen gas to form gaseous carbon dioxide and gaseous water.
Limestone (CaCO3) is decomposed by heating quicklime (CaO) and carbon dioxide. Calculate how many grams of quicklime can be produced from 9.0 kg of limestone.
The density of tungsten is 19.35 g/cm3. A sample of tungsten is placed in a graduated cylinder containing 30.0 mL of water and the water level rises to 34.0 mL. What is the mass in grams of the sam
A saline solution used in intravenous drips for patients who cannot take oral fluids contains 0.92% (w/v) NaCl in water. How many grams of NaCl are contained in 729 mL of this solution?
Consider the reaction, 2 Al(OH)3 + 3 H2SO4 -> Al2(SO4)3 + 6 H2O. How many grams of Al2(SO4)3 are generated when 152 g of H2SO4 reacts?
What is the purpose of spaying 1% dimethylglyoxime solution onto a paper cylinder?
Please enter the values you calculated for the concentrations of bromothymol blue and thymol in the mixture
You fill a rigid steel cylinder that has a volume of 20.0L with nitrogen gas (N2)(g) to a final pressure of 2.00 time 10 to the fourth kpa at 28 degrees celsius. How many moles of N2(g) does the cyl
Draw electron flow arrows and complete the Lewis structures for the reaction that occurs between an alkene and hydrogen bromide creating species A and B above.
Calculate the energy in joules and calories lost when 58.0 gold () cools from 226 to 118
What is happenning to the bonded metal atoms during elastic deformation and what is happening to the bonded metal atoms during plastic deformation?
What are the signs (positive or negative) of DS and DH for the boiling of liquid water to form steam and what is the ratio of DH/DS at standard pressure?
What are some simple steps to determine the specificity of a co factor?
When one mole of benzene (C6H6) undergoes complete combustion, 3,170 kJ are released. Calculate the combustion energy of 0.350 kg of benzene?
A calorimeter contains 125 g of water at 26.1°C. A block of metal with a mass of 25 g is heated to 96.5°C and then placed in the water in the calorimeter. After sufficient time,
Given a 0.250 M K2CrO4 Stock Solution, describe how you would prepare a solution that is 0.0125 M K2CrO4. That is, what combination(s) of pipet and volumetric flask would you use? Typical sizes of
The vapor pressure of carbon tetrachloride, CCl4, is 0.354 atm and the vapor pressure of chloroform, CHCl3, is 0.526 atm at 316K . A solution is prepared from equal masses of these two compounds at
1.0 mol of CaCN2 and 1.0 mole of water are mixed together: CaCN2 + 3 H2O → CaCO3 + 2 NH3 How much NH3 could be produced?