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Someone investigating the properties of solutions containing carbonate ions prepared a solution containing 5.639g Na2CO3 in a flask of volume 250ml. Some of the solution was transferred to a buret. What volume of solution should be dispensed from the buret to provide 8.361 mmol Na2CO3? What volume should be dispensed to provide 6.282 mmol CO3 2-?
how much money would you spend on gas in one week if gas costs 1.10euros per liter and your car's gas mileage is 39.0mi/gal ? Assume that 1euro=$1.26 dollars.
how much energy in kilojoules is required to convert 205 of diethyl ether at its boiling point from liquid to vapor if
What is the quantity of moles, of neon gas if 4.87 L is at a pressure of 0.635 atm and the temperature
A running automobile produces CO at a rate of 188g CO per hour. A car is left idling in a garage 5.2m long, 4.0m wide, and 2.2 m high at 20 degrees C. How long would it take to build up a lethal concentration of CO of 1000 ppmv?
Define dipole moment. Distinguish between polar and nonpolar bonds.Give an example of each
How many grams of sucrose must be added to 320g of water to lower the vapor pressure by 1.5mm Hg at 25 degrees Celcius? The vaporpressure of water at 25 degrees Celcius is 23.8mmHg
predict the ratio of the two masses of oxygen that combine with a fixed mass of lead to form PbO and PbO2? PbO:PbO2 oxygen mass ratio= ?/?
Of the following compounds, which would be considered ionic bonds and which would be considered covalent bonds, and why
Suppose 1500 J of heat energy are put into a sample of liquid water at 25 degrees celsius, and the final temperature of the water is 75 degrees celsius. How many grams of water are present?
if the vapor of a volatile liquid of 2.31grams nbspis able to fill a flask of 498-ml at 100 degree celsius and 775 mm
Solid CO2 (dry ice) forms a molecular crystal that sublimes at -78oC. SiO2 forms a network solid that melts at about 1200oC. Which of the following accounts for this striking difference in properties
examine the reaction you have written. what will be the effect of decreased pressure on the system on the
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