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A hot air balloon occupies a volume of 978 L at a temperature of 27 °C. What is the temperature, in °C, if the volume is decreased to 873 L?
What mass of O2 does the tank contain. kg (b) What volume would the gas occupy at STP? L (c) At what temperature would the pressure in the tank equal 150. atm
An unknown metal hypochlorite salt, M(ClO)2, is subjected to analysis by iodometric titration: the salt is dissolved in dilute sulfuric acid, treated with excess aqueous KI, and then titrated with Na2S2O2 in the same manner as in your experiment
When determining the major contributor for a resonance structure, is it better to have a carbocation (positive charge on a carbon but without a complete octet) or is it better to have a positive charge on an electronegative atom like oxygen
NaOH(aq) is a base. Please write a chemical equation showing how it is a base according to the Arrhenius definition. The response has to be in the form of a balanced chemical equation with all phases included
A pipet delivers 10.5, 10.3, 10.9 and 10.7 ml. (a)find the mean volume and deviation from the mean for each and calculate the average deviation from the mean. (b) calculate the relative deviation (in %) for this set of data.
Which of the following molecules are polar? (There may be more than one; choose ALL the polar molecules for full credit)
What mass of ethylene glycol must be added to 1615g water to raise the boiling point to 104.3 degrees celcius?
The vapor pressure of the liquid SO2 is measure at different temperatures. the following vapor pressure data are obtained.
If an acid base reaction produces a solution with a pH of 7 at its equivalence point, why does an indicator solution that changes color at either a pH of 5 of 9 work just as well as one that changes at a pH of 7
if 2.67 mL of 0.205 M KOH is required to completely neutralize 25.0mL of a CH3COOH solution, what is the molarity of the acetic acid solution?
use the appropriate relationships from the chapter of electrons in Atoms to determine the wavelength of the line in the emission spectrum of He+ produced by an electron transition from n=5 to n=2
Celsius and takes 96 seconds. How long would you expect the reaction to take if ran at 50 degrees Celsius?
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