Which of the following would be an ion with a double positive charge?

A) an Mg atom that gains two electrons
B) an Mg atom that gains one electron
C) an Mg atom that loses two electrons
D) an Mg atom that loses one electron
E) none of the above


C

Environmental & Atmospheric Sciences

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An element is a material

A. that has consistent physical properties. B. that has consistent chemical properties. C. with more than one type of atom. D. that is pure. E. consisting of only one type of atom.

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Crossbeds and current ripple marks can both indicate the direction of a current. Explain how crossbeds and current

ripple marks differ and the types of environments you would expect to find them in. Fill in the blank(s) with the appropriate word(s).

Environmental & Atmospheric Sciences

Latitude is a major control of temperature since latitude determines the Sun angle

Indicate whether the statement is true or false

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Which of the following is not one of the world's top five most populous nations?

a. Vietnam b. India c. United States d. Brazil e. Indonesia

Environmental & Atmospheric Sciences