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Which of the following terms best describes a dimensionless quantity representing the amount of matter in a particle or object?

Which of the following laws states that the total energy of a system remains constant, though energy may transform into another form?

Which of the following terms best describes the rate at which charge flows?

Which of the following laws states that total charge is constant in any process?

Assets are things of value owned by a business, while liabilities represent amounts the business owes to others

In a chart of accounts, asset accounts typically start with the number 1, while liability accounts start with the number 2.

Which of the following statement(s) is/are correct  Sample A can be a representation of a flask containing sulfur dioxide gas. Sample B can be a representation of a flask containing carbon monoxide gas. Sample C can be a representation of a flask containing helium gas and hydrogen gas. 

Which of these ions has the largest radius (O2-, F-, Na+, or Mg2+)?

Which is the correct Lewis structure for COF2?

The following image shows interactions between molecules of ethylamines (CH3CH2NH2). From the image identify the hydrogen bonds.