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A brick is initially 12.67 cm high and an aluminum can is initially 12.68 cm high. By how much must their temperatures be raised in order for the brick and the can to have exactly the same height?
How do I determine between two IRs to find which indicates a pure sample, assuming each compound has only one functional group
The predominant isotope of gold ^197, 79 Au, has an experimentally determined exact mass of 196.967 amu. What is the total nuclear binding energy of gold in electrovolts per atom
Draw the repeat unit of the copolymer used for artificial skin growth, which is formed by condensation polymerization of lactic acid and glycolic acid.
Water with an alkalinity of 2.00*10to negative 3eq/lhas a ph 7.0 calculate [co3][HCO3]-[CO3] and [OH]-
The decomposition of urea in 0.1 M HCl is first order in urea and first order overall. When [urea] = 0.200 M , the rate at 61.0 °C is 8.56 x 10-5 M/s. What is the concentration of urea in this solution after 4751 s if the starting concentration is 0..
state the arrhenius bronsted-lowry and lewis definitions of acids and bases. given an acid-base reaction equation pick
What mass of solid sodium fluoride (molar mass = 41.99 g/mol) should be added to 1.0 L of 0.23M hydrofluoric acid to make a buffer with a pH of 2.94? (Ka of HF = 1.36 x 10-3)
Determine the value of pH of given solutions that are (a) a solution that is 0.40 M CH3CO2H, (b) a 0.40 M CH3CO2H solution, (c) 0.20 M NaCH3CO2. And explain your answer too?
When most Fe3+ salts are dissolved in dilute nitric acid, the solution is often yellow to orange-yellow in color. Why could you not visually detect these colors in the Fe(NO3)3 stock solution
Use the molar volume of a gas at STP to determine the volume (in L) occupied by 10.5 g of neon at STP.
used in high speed centrifuges to separate the parts of a biological cell. How many liters of 3.07 M sucrose contain 245 g of solute?
Calculate the average absorbance and use this value for an absorbance point on your graph. Use the printed graph from above, find the average Absorbance of the unknown on the y-axis
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