Answer:
e. None of the answer choices
Explanation:
- The solvents used for 1HNMR analysis are chloroform D (CDCl3), and acetone D6 (CD3COCD3) and deuterium oxide (D2O).
- And here any of these three nans are listed in the given option so that we can say that none of the answers are correct.
- so correct answer is e. None of the answer choices
Answer is: D. kilograms and cubic millimeters
.
Kilogram (symbol: kg) is the base unit of mass (anything that has mass in this question) in the International System of Units and cubic millimeter (symbol: mm³) is volume measurement unit (takes up space).
Second (symbol: s) is the base unit of time in the International System of Units and kilometer (symbol: km) is a unit of length in the metric system.
Gram (symbol: g) is a metric system unit of mass, but millimeter (abbreviated: mm) is an unit of distance in the metric system.
Yard (abbreviation: yd) is an unit of length and liter (symbol: l) is metric unit of capacity.
The correct answer is "greenhouse gases." Certain gases in the atmosphere, like carbon dioxide, nitrous oxide, and methane, absorb heat and prevent it from escaping into space. These gases are called greenhouse gases.
