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A tank of helium gas at 25 degrees celcius has a pressure of 100atm and a volume of 50 liters how many 10 liter helium balloons could be filled from the tank assuming no change in the temp and a pressure in the balloons of 1.05 atm?
calculate the freezing and boiling points of each of the following solutions. 0.40 mol ethylene glycol and 0.17mol KBr in 122 g H2O.
use the wattage of the lightbulb and the time it is on to calculate in joules assume that the cylinder and lightbulb
the rate constant for a reaction is 7.7 x 10^-3 s^-1 at 25 C, and the activation energy is 33.6 kj/mol. what is k at 75C
1) the symbols for the elements in the compound. 2) the oxidation numbers of the elements involved and write them as superscripts to the right of the elemental symbols
A compound of bromine and fluorine is used to make UF6, which is an important chemical in processing and reprocessing of nuclear fuel. The compound contains 58.37% by mass of bromine. Determine its empirical formula.
At 1.00 atm and 23 C, how many liters of carbon dioxide are formed by the combustion of 3.40g of butane?
A student following the procedure of the experiment determining the molar mass of a volatile liquid by the dumas method obtaint the following data for an unknown volatile liquid
Write contributing (important) resonance structures for each of the following compounds and predict their relative C=O vibrational frequencies based on the importance of the contributing resonance structures. List in them order from highest to low..
determine which of the given alcohols 2-methylhexan-3-ol 3-methylpentan-3-ol 33-dimethylpentan-2-ol
the molality of a solution 0.085m and there is 0.0156kg solvent. Calculate the moles of solute present in solution
A 100.0-L flask contains a mixture of NO2 gas and CO gas. If the concentration of NO2 is 5.5 × 105 ppm, and the total pressure is 790 torr, what is the partial pressure of CO in the flask?
Consider a solution formed by mixing 51.0 mL of 0.100 M H2SO4, 27.0 mL of 0.100 M HOCl, 25.0 mL of 0.200 M NaOH, 25.0 mL of 0.100 M Ca(OH)2, and 10.0 mL of 0.150 M KOH. Calculate the pH of this solution.
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