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Problem- Bromine has two isotopes of 78.918 u (50.69%) and 80.916 u (49.31%). What is the average atomic mass of Br?
Any help is greatly appreciated!
Calculate the wavelength of the photon emitted when an electron makes a transition from n=4 to n=3 . You can make use of the following constants
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A buffer, consisting of H2PO4- and HPO42-, helps control the pH of physiological fluids. Many carbonated soft drinks also use this buffer system. What is the pH of a soft drink in which the major buffer ingredients are 8.00 g of NaH2PO4 and 6.70 g..
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2HI(g)------H2(g)+I2(g) Kc=0.0200 at 745 K suppose 1.00 mol HI9g) and 1.00 mol H2(g) are placed in a 10.0 L Flask and heated to 745 K. What are the concentration of each substance when equilibrium is reached
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The active ingredient in acetylsaliclic acid was isolated. What does it mean is my experimental melting point range was very broad and was also lower than the literature melting point
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