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Author Archives: Anonymous

Isotope Abundance Atomic Mass (amu) A-32 80% 32.188 A-33…

Isotope Abundance Atomic Mass (amu) A-32 80% 32.188 A-33 11% 33.099 A-34 9% 34.010       X-53 78% 52.999 X-55 14% 55.001 X-56 8% 56.111       Z-61 87% 60.992 Z-63 10% 62.987 Z-64 3% 63.909

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Determine the amount of protons, neutrons, and electrons in…

Determine the amount of protons, neutrons, and electrons in the following isotope of sulfur.  Protons Electrons Neutrons A 16 16 30 B 16 14 18 C 30 32 16 D 30 16 18 E 16 18 14

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Which of the following is an example of a physical property…

Which of the following is an example of a physical property ?  

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Determine the correct statements regarding the previous imag…

Determine the correct statements regarding the previous image from the dropdown menu below (hint: you may need to refer to the key).   The substance shown in the previous image is [1] Flask B shows and example of a [2]

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Use the following flasks and key to answer the following 2 q…

Use the following flasks and key to answer the following 2 questions: 

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Determine which of the following statement(s) is/are correct…

Determine which of the following statement(s) is/are correct.  O is the symbol for oxygen Ag is the symbol for silver Ni is the symbol of nitrogen

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Using the molar mass and density table provided in the quiz…

Using the molar mass and density table provided in the quiz instructions determine the mass of the theoretical element A when the volume of A is 39.5 ml? (1 mL=1 cm3)

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How many moles are in 31.5 g of manganese (Mn)? 

How many moles are in 31.5 g of manganese (Mn)? 

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The following isotopes of theoretical element X are listed i…

The following isotopes of theoretical element X are listed in the previous question with their abundance and atomic mass. Determine the average atomic mass of element X. 

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How many atoms are in 15.7 g of neon (Ne)? 

How many atoms are in 15.7 g of neon (Ne)? 

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