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Please write a paragraph identifying and explaining what you…

Please write a paragraph identifying and explaining what you think are the three most important long-term factors before 1850 that ultimately contributed to our national fragmentation in 1861. Feel free to examine a broad scope of history when considering your options. For example, you might want to pick your three choices from a field that includes everything from the before the constitutional convention to the long shadow of market revolution, court decisions, expansion, foreign policy, intellectual and cultural shifts, party politics, race, reform, technology, westward expansion, etc., etc.

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This Thomas Cole painting:

This Thomas Cole painting:

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How many total ions are produced when Na2SO4 completely diss…

How many total ions are produced when Na2SO4 completely dissociates in water? 

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Which of the following statements is true about anions? 

Which of the following statements is true about anions? 

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Which of the following best describes the general properties…

Which of the following best describes the general properties of elements found to the left of the metalloids on the periodic table? 

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In a chemical reaction, 18.0 grams of hydrogen peroxide deco…

In a chemical reaction, 18.0 grams of hydrogen peroxide decompose into 16.0 grams of water and oxygen gas. What mass of oxygen gas is produced?

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An ion of sulfur has 16 protons, 18 electrons, and a mass nu…

An ion of sulfur has 16 protons, 18 electrons, and a mass number of 34. Which of the following statements is correct? 

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An unknown Element X has two naturally occurring isotopes:X-…

An unknown Element X has two naturally occurring isotopes:X-62 (mass = 62.0 amu)X-64 (mass = 62.0 amu)The average atomic mass is 62.8 amu. What is the percent abundance of each isotope? Round each percent to the nearest whole number or tenth as appropriate. 

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Which of the following is the correct chemical formula for d…

Which of the following is the correct chemical formula for dinitrogen pentoxide?

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The element carbon (C) has two common isotopes. 98.89% of ca…

The element carbon (C) has two common isotopes. 98.89% of carbon atoms have 6 neutrons and 6 protons, while 1.11% of carbon atoms have 7 neutrons and 6 protons. Based on this information, what is the average atomic mass of carbon? Round your answer to the tenths place.

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