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Equal mass samples of three liquids, A, B and C are obtained. The initial temperatures are 14 C, 24 C, and 40 C for liquids A, B, and C, respectively. If liquids A and V are mixed, the final temperature is 20 C and if liquids V and C are mixed, the final temperature is 34 C. Determine the final temperature if all three liquids are mixed at once. (Assume no heat is lost to container or surroundings).
A 100 ml sample of 0.10 M Ca(OH)2 is titrated with 0.10 M HBr. Determine the pH the solution after the addition of 300.0 ml HBr
Calculate the concentration in ppm of a pollutant that has been measured at 450 mg per 150 kg of sample.
A gas absorbs 2.5 J of heat and then performs 13.1 J of work. The change in internal energy of the gas is
a 450.0 mL sample of a 0.273 M solution of silver nitrate is mixed with 400.0 mL of 0.200 M calcium chloride. what is the mass of the solid produced
calculate the moles of aluminum ions present in 250.0 g aluminum oxide.acetaminophen a common aspirin substitute has
If cost per gram were not a concern, which of the following substances would be the most efficient per unit mass for melting snow from sidewalks and roads. Explain.
Write a balanced equation for the yeast using glucose to produce energy, etanol and carbon dioxide.
What is the maximum mass of aluminum chloride that can be formed when reacting 15.0 of aluminum with 20.0 of chlorine
How much energy is needed to warm 0.500 g of silver from 25.0 degree C to 27.5 degree C? The specific heat of silver is 0.24J /g. degree C
Draw the Lewis structures for each of the following molecules or ions. Which do not obey the octet rule? (a) NO, (b) BF3, (c) , (d) OPBr3 (the P is the central atom), (e) XeF4
Determine the vapro pressure ( in mmHg ) of a substance at 29*C, whose boiling point is 76*C and has a changeHvap of 38.7 kj/mol.
14CO2 can be used to label calvin Cycle intermediates under conditions of high illumination. What is the percent chance that the single GAP produced (in the presence of 14CO2) is labeled with 14C
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