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How many protons, electrons, and neutrons does an atom with atomic number 50 and mass number 125 contain? a 70 neutrons, 75 protons, 50 electrons b 120 neutrons, 50 protons, 75 electrons c 50
protons, 50 electrons, 75 neutrons d 75 electrons, 50 protons, 50 neutrons
50 protons, 50 Electrons and 75 Neutrons. The Atomic number is the number of protons in the nucleus of an atom, while the mass number is the sum of the protons plus the neutrons. [ The electrons have near 0 mass so they don't add up to the mass number and unless the atom is an isotope, the number of protons is always equal to those of electrons. ]
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Asked 2/8/2013 4:16:49 PM
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If 20.0 grams of Ca combines completely with 16.0 grams of S to form a compound, what is the percent composition of Ca in the compound? a 1.25% b 20.0% c 44.4% d 55.6%
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The lowest whole-number ratio of the elements in a compound is called the a empirical formula b molecular formula c binary formula d representative formula
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Asked 2/1/2013 11:31:49 PM
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Which of the following compounds has the lowest percent gold content by weight? A) AuOH B) Au(OH)3 C) AuCl3 D) AuI3
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Asked 2/1/2013 11:28:03 PM
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Write the slope intercept form of the equation of the line that passes through (-2, -3) and (2, -5). a y = -2x - 7 b y = 1/2x + 4 c y = -1/2x - 4 d y = -2x + 1
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Updated 68 days ago|9/16/2014 7:50:10 AM
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y = -1/2x - 4 is the equation that writes in the slope intercept form of the equation of the line that passes through (-2, -3) and (2, -5 ) .
Added 68 days ago|9/16/2014 7:44:39 AM
Deleted by jeifunk [9/16/2014 7:50:06 AM], Undeleted by jeifunk [9/16/2014 7:50:08 AM]
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