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Describe how to prepare 50.0mL of 5.30 x10-2 M solution from pure drug and water. Calculate the number of grams of drug to be weighted for this solution
A mixture of sand and iron pieces weighs 53.29 g. Using a magnet, the iron is removed and weighs 15.63 g. What is the percent composition of sand in the mixture?
A 48.0-L gas cylinder contains 249 mol of H2 gas at 298 K. What is the pressure inside the cylinder.
A fluorinated organic gas in a cylinder is com- pressed from an initial volume of 960 mL at 158 Pa to 478 mL at the same temperature. What is the final pressure? Answer in units of Pa.
A sample of gas at 47°C and 1.03 atm occupies a volume of 2.20 L.What volume would this gas occupy at 107°C and 0.789 atm?
A sample of oxygen gas has a volume of 131 L at 25°C and a pressure of 0.982 atm. Calculate the volume of this oxygen sample at STP.
1.0 mol of CaCN2 and 1.0 mole of water are mixed together: CaCN2 + 3H2O → CaCO3 + 2NH3 How much NH3 could be produced?
What is the vapor pressure of mercury at room temperature, 25 degrees celsius.
Fundamentals of chemistry - The conditions under which gases behave most ideally and Under the Bronsted?Lowry definition a base
A 125 ml sample of a solution that is 2.6x10^-3M in AgNO3 is mixed with a 230 ml sample of a solution that is 0.10M in NaCN. After the solution reaches equilibrium, what concentration of Ag+ remains?
When 27.5 mL of 0.520 M H2SO4 is added to 27.5 mL of 1.04 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises to 30.17°C. Calculate
Lipids (fats) are esters of long chain fatty acids and glycerol. Similarly, describe the general structures of proteins and carbohydrates.
a 250.0ml sample of air at 100.0k is warmed to 200.0k at constant pressure. what is the volume of the air sample at the new temperature?
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