Chemistry, 11.07.2019 16:00 ilovebeans25423
How many grams of sodium phosphate monobasic would we add to a liter and how many grams of sodium phosphate dibasic would we add to a liter to make a 0.1 m phosphate buffer at ph 6.86?
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Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.
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Chemistry, 22.06.2019 08:00
Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next
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In 2002, the rare earth elements mine in mountain pass, california was closed because
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Chemistry, 22.06.2019 12:00
What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?
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How many grams of sodium phosphate monobasic would we add to a liter and how many grams of sodium ph...
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