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January 2020 Chemistry Regents Questions 31-40 Multiple Choice Test

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January 2020 Chemistry Regents Questions 31-40

Use your knowledge of Chemistry to answer all questions in the data set. You will need your Chemistry reference tables and a calculator to answer some of the questions. Good Luck.

NOTE: If the question contains an image, clicking on it will enlarge it for easier viewing. If there is a "More Info" link after the question, clicking it will display additional content related to the question.

Which atom has a mass of 12 u?

Which electron configuration could represent the electrons in a sodium atom in an excited state?

What is the number of valence electrons in a nitrogen atom in the ground state?

Graphite and diamond are both solid forms of the element carbon. Which statement explains the different properties of these two forms of carbon?

A measured value for the atomic radius of platinum atoms was determined to be 143 picometers. Based on Table S, what is the percent error of this measured value?

What is the chemical formula for sodium oxalate?

What is the molecular formula for this compound?

Which equation represents conservation of charge?

Which equation represents a single replacement reaction?

The bond between which two atoms is most polar?

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