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What is the mass notation number of an atom that has 9 protons, 11 neutrons, and 9 electrons?
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Find the mass in grams of hydrogen gas produced when 14.0 moles of hcl is added to an excess amount of magnesium.
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Determine the mass of fuel required for the expected energy consumption in the united states for the next ten years. energy use per person per year in the united states = 3.5 x 1011joules base calculations on current population of 310,000,000.
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Of the groups of elements below, which are most likely to gain electrons to become anions? a. alkali metal b. boron group c. halogen d. transition metal
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Asolution contains 225 g of sodium chloride, nacl, dissolved in enough water to make a 0.25 l of solution. what is the molarity of the solution?
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What is the mass notation number of an atom that has 9 protons, 11 neutrons, and 9 electrons?...
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