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Author Archives: Anonymous

An atom that has 54 protons, 54 electrons, and 78 neutrons i…

An atom that has 54 protons, 54 electrons, and 78 neutrons is _____.

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The symbol Ca stands for the element

The symbol Ca stands for the element

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Which of the following contains the largest number of oxygen…

Which of the following contains the largest number of oxygen atoms?

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How many phosphorus atoms are represented by one formula uni…

How many phosphorus atoms are represented by one formula unit of calcium phosphate, Ca3(PO4)2?

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The symbol Ni stands for the element _____.

The symbol Ni stands for the element _____.

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Which of these are isotopes of hydrogen?

Which of these are isotopes of hydrogen?

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Which of the following elements is most similar to chlorine?

Which of the following elements is most similar to chlorine?

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How many protons, electrons, and neutrons, respectively, doe…

How many protons, electrons, and neutrons, respectively, does have?

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How many electrons are present in a bromine atom with a mass…

How many electrons are present in a bromine atom with a mass number of 87?

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The total number of oxygen atoms indicated by the formula Ti…

The total number of oxygen atoms indicated by the formula Ti3(PO4)2 is

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