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1. A balloon holds 29.1 kg of helium. What is the volume of the balloon if the pressure is 1.23 atm and the temperature is 22 °C?
2. A 1.71 mol sample of nitrogen gas occupies a volume of ______ L at STP.
If the hindenburg held 200000 m^3 of hydrogen gas at 23 degrees C and 1.0 atm, what mass of hydrogen was present
Nicotine is a poisonous, addictive compound found in tobacco. A sample of nicotine contains 6.16 mmol C, 8.56 mmol H, and 1.23 mmol N ( mmol = millimol = 10-3 mol).
a small immersion heater is used to heat water for a cup of coffee. we wish to use it to heat 236 ml of water about a
An important reaction in the formation of photochemical smog is the photodissociation of NO2: NO2 + hv >>> NO(g) + O(g) The maximum wavelength of light that can cause this reaction
Question- A solution containing 5 mL of each 4 M acetone, 1 M HCl, and 0.005M iodine is mixed with 10 mL of water. 1) What is the molarity of acetone in the reaction mixture. Hint- what is the original concentration and what is the dilution factor
If you were to combine a 200.0mL aqueous solution of 0.75M NaHCO3 with 200.0mL of 0.50M CaCl2 in a constant pressure calorimeter, what change in temperature would you measure?
Explain a certain element has a melting point over 700 C and a density less than 2.00 g/cm3. Provide one possible identity for the element
What mass of the hydrate could be recovered from the solution? When separated from a H 2 O solution, copper sulphate forms a hydrate with 5
Determine the point group of each of the three possible geometries of the hypothetical Be3+ on, ten draw the molecular orbitals for each geometry,
Can anyone explain the intermediate compound formation theory in detail
what is the molarity of a solution containing 7.0 moles of solute in 4300 mL of solution?
First order decomposition in which the rate constant is 0.00830 sec-1, how long will it take (in minutes) until 0.309 mol/L of the compound is left, if there was 0.517 mol/L at the start
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