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Which of the following processes are spontaneous? (Select all that apply.) A satellite falls back to earth. A kitchen gets cluttered. A house is built. A satellite is launched into orbit.
How many grams of magnesium chloride could be formed from the reaction of 6.82 g of magnesium with excess HCl?
if 0.150 moles of salicylic and excess acetic anhydride are used during a synthesis of aspirin, how many grams of aspirin will be obtained if the reaction gives a 38% yield.
If the pressure exerted by ozone, O3, 3.0x10-3 atm and the temperature is 247 K , how many ozone molecules are in a liter.
Napthalene has a log Kow of 3.33. Estimate its soil-water partition coefficient normalized to organic carbon.
In some cases a Br-Br bond can be broken by the absorption of photons of light energy. Br-Br bond energy is 192 kj/mol determine the photon energy and the wavelength (in nanometers) associated with breaking this bond.
calculate number of moles of anhydrous compound recovered. c- calculate number of moles of water lost from the hydrated compound.d- what is the formula of the hydrate?
Assuming complete dissociation, what is the molality of an aqueous solution of KBr whose freezing point is -2.95 degrees celsius . water freezing point 1.86
Calculate the volume of N2 produced at 21 degrees C and 823 mmHg if 60.0 g of sodium azide reacted
the hybridization of Carbon in this molecule? b) What would be its molecular shape? and c) What is the bond angle around the C atom?
write a balanced equation for the reaction that takes place determine number of moles of KMnO4 used number of moles of iron
A 10.00L vessel conatining CO2 has an internal pressure 20.0 atm at 273K Calculate the number of Moles Using the virial equation and van der wals equation
When 4.00 g of hydrogen nuclei fuse to form helium in the sun, 0.0265 g of matter is converted into energy. Use Einstein's equation, E = mc2, to calculate the energy equivalent of this change in mass.
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