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A block of material with a cross-sectional area of 15 cm2 and length of 8.0 cm is at hand. A temperature difference of 30°C is established and maintained across the block. Find the rate of heat flow through it if:
a. The material is copper (K = 397 Js-1 m -1C -1 ).
b. The material is air (K = 0.0234 Js-1 m -1C -1 ).
c. The material is wood (K = 0.08 Js-1 m -1C -1 ).
explain with revelant mechanism why sec-butly alcohol loses its optical activity in sulfuric acid but retains its
Explain the chemical nature of storage fats. How are they stored (chemically), where are they stored (biologically).
How many orbitals in an atom can have each of the following designations. a. 2s b. 3p c. n = 4 d. 6f
Under standard-state conditions, what spontaneous reaction will occur in aqeuous solution among the ions
A solution of 5.36 g of a molecular compound dissolved in 76.8 g benzene (C6H6) and has a boiling point of 81.46oC. What is the molar mass of the compound
To find the mass of water use the density of water = 1.0 g/mL. I have looked at multipule different solutions that have already been worked but have not been able to get the correct answer no matter how many different ways i got about getting it.
If 1.0 μg/ml of pigment X shows an absorbance of 0.059 at 370 nm, then what is the concentration of a solution of pigment X that shows an absorbance of 0.443 at 370 nm? (Assume linearity.)
The excess of acid needed 16ml of 0.25M Naoh for neutralization. then Calculate the percentage of calcium carbonate and magnesium carbonate?
A piston-cylinder device contains a saturated mixture of steam and water having a total mass of 0.5 kg at a pressure of 160 kPa and an initial volume of 100 liters
On the basis general trend of electron affinity one would predict that oxygen would have a more sympathetic electron affinity than sulfur. It turns out conversely sulfur has a more favorable affinity than oxygen.
question what is the side reaction that occurs or what side products are generated during a thiamine catalyzed benzoin
Question- A chemist prepared a 0.244M solution of fructose at 25 degrees C. At equilibrium it was found that its concentration had dropped to 0.123M. 1) What percentage of fructose was converted to glucose
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