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Question- Calculate the change in internal energy of the following system: a balloon is cooled by removing 0.657kJ of heat. It shrinks on cooling, and the atmosphere does 382J of work on the balloon.
Write all steps required to complete the computation of energy
When the metal was placed in a constant-pressure calorimeter containing 30.0g of water, the temperature of the water rose from 24.80 degrees C to 29.75 degrees C. Calculate the specific heat of the metal.
If the bonding in Nb metal is described used band theory, what fraction of the band would be filled with electrons? Assume that all valence bands (5s, 4d, and 5p) overlap
Find the mass of the sugar (C6H12O6) required to produce 1.82 L of carbon dioxide gas at STP from the reaction?
what is the lewis structure of C2H2Br2, also is it polar or non polar, are there any resonance structures or isomers?
Which of the following are a conjugate acid-base pair in the above reaction?
Gaseous ammonia reacts with oxygen gas to produce gaseous nitrogen monoxide and liquid water. If 750 grams of ammonia and 750 grams of oxygen gas were mixed
A perfect cube of aluminum metal weighs 20.00g. The density of of aluminum is 2.70 g/ml. What are the dimensions of the cube?
a compound contains 87.7% carbon and 14.3% hydrogen.its relative molecular mass is 70.what is the empirical formula and the molecular formula.and is it an alkane or alkene
why do we assume that the extra electrons in i3- must be placed on the central iodine atom to exceed the octet rule?is
A 20.0mL sample of 0.20 M sodium acetate is titrated with 0.11 M HCL(aq). Explain what is the pH after the addition of 50.0mL HCl (aq). (Kb ofCH3CO2- = 5.6 ´10-10)
a lithium salt used in lubricating grease has the formula licnh2n1o2. the salt is solublein water to the extent of
Calculate the pH of a buffer solution made by mixing 44 ml of a 0.06 M ammonia solution with 60 ml of a 0.10 M ammonium nitrate solution. Give the pH to two decimal places.
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