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Question- A pot of water at the boiling point (100C) contains 8200g of water. It is allowed to cool to room temperature (25C). How much thermal energy (heat) is given off in the cooling process? The specific heat capacity of water is 4.184 J/gCC=Degrees
Your answer must be supported by illustrations, Please answer with work shown to receive points
A student attempted to identify an unknown compound by the method used in this experiment. she found that when she heated a sample weighing 0.4826 g, the mass barely changed, dropping to 0.4855 g.
Question- Photochemical reactions often produce different products than thermal reactions with the same reactants. Why
Air is approximately 80% nitrogen and 20% oxygen by volume, what is density of air at 273 K and 1 atmosphere? And at a altitude of 2550 ft would density of air be higher or lower, why
Do all ionic compounds dissolve in water, Do all covalent compounds dissolve in water? answer should be 50 to 100 words.
Draw as many resonance structures as you can for the following nitrogen-containing compounds. Not all will obey the octet rule. (a) N2O (b) NO (c) NO2
How much heat (in kilojoules) is evolved or absorbed in the reaction of 3.05 of with enough carbon monoxide to produce iron metal?
although it is not an ionic solute a 1.00-molal solution of ammonia nh3 is actually a weak electrolyte and has an
An aqueous solution is 36.0 % by mass potassium bromide, KBr, and has a density of 1.33 g/mL. determine the mole fraction of potassium bromide in the solution?
draw correlation diagram the HOMO of allyl anion and the LUMO of ethylene and comment on the symmetry match of the two.
The sudden opening of the epiglottis and vocal cords releases this air explosively. Just prior to this release, what is the approximate pressure of the gas inside the lungs?
Because of the relationship between structure and color would you anticipate the 2, 4-DNP derivative of an aldehyde or ketone conjugated with an aromatic ring or double bond to be yellow or red-orange
What mass of this substance must evaporate in order to freeze 250 g of water initially at 15 C? (The heat of fusion of water is 334 {J/g}; the specific heat of water is 4.18 {J/g c.K}.)
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