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The concrete wall of a building is 0.114 m thick. The temperature inside the building is 24.3 °C, while the temperature outside is 0.0 °C. Heat is conducted through the wall. The outside of the wall loses the energy only due to radiation. What is the emissivity of the wall?
what is the major difference between the two-dimensional and three- dimensional models of ethane and methane? when
Calculate the pH of a buffer solution prepared by dissolving 0.20 mole of cyanic acid (HCNO) and 0.80 mole of sodium cyanate (NaCNO) in enough water to make 1.0 liter of solution. Ka(HCNO) = 2.0 x 10-4
question you need to produce a buffer solution that has a ph of 5.23. you already have a solution that contains 10 mmol
The oil produced from eucalyptus leaves contains a vloatile organic compound eucalyptol. At 190 degrees c, and 60.0 torr, a sample of eucalyptol vapor had a density of 0.32g/L. Calculate the molar mass of eucalyptol
Problem- Suppose you have 135mL of a buffer that is 0.30M in both propanoic acid (C2H3COOH) and is conjugate base (C2H3COO). Calculate the maximum volume of 0.30M HCl that can be added to the buffer before its buffer capacity is lost.
The compound has a molecular formula of C7H14O2. Draw the structure from the following NMR data: Ha=1H 1.2 ppm Hb=3H 1.3 ppm Hc=4H 4.1 ppm
1. explain why bothcisandtransisomers are possible for conh32c2o42-but only the cisisomer is possible for conh34c2o4.2.
Oxygen gas as well as potassium chloride can be created by heating potassium chlorate in the presence of manganese dioxide as a catalyst. Explain how many moles of oxygen gas would be obtained from 1.3g of potassium chlorate
a sample of chloroform is found to contain 10.5 g of carbon 93.1 g of chlorine and 0.88 g of hydrogen. if a second
Calculate the pH at each of the following points in the titration of 50.0 mL of a 0.50 M B(aq) with 0.50 M HCl(aq). (a) before addition of any HCl
How then, how would I calculate the pH of a buffer + NCl after taking 32 mL of the solution noted above and pipet 1.0 mL of 6.0 M HCl with the pH of buffer + HCl = 4.41
Arrange the following gaseous substances in order of decreasing root mean square velocity at 25°C. argon, fluorine, carbon dioxide, oxygen, helium A.
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