Nicotine has two rings and M+=162.1157 by high-resolution Mass Spectroscopy. Give the molecular formula for nicotine and calculate the number of double bonds.

A substance is matter that has a definite composition. TRUE or FALSE?

The amplitude of a wave is most directly related to what wave characteristic? Crest length Frequency Wavelength Wave height

Which of the following make up the nucleus of an atom? A. protons and neutrons B. electrons only C. neutrons only D. protons and electrons

Elements of the same period (horizontal row) behave similarly. True or False

When lithium reacts with bromine to form the compound LiBr, each lithium atom: (1) gains one electron and becomes a negatively charged ion (2) gains three electrons and becomes a negatively charged ion (3) loses one electron and becomes a positively

Which burns faster, a large log or the same log cut into small sticks of wood? 1. neither, both burn at the same rate 2. small sticks of wood 3. a large log

What types of cells in your body are no longer undergoing mitosis

What is the solubility of nitrogen and calcium nitrate in cyclohexane?

Carbon exists in nature as three isotopes. Given the atomic masses and relative abundance of the isotopes, what is the average atomic mass of carbon?

What is the correct value for Avogadro's number? A. 6.022 x 10^23 B. 6.023 x 10^22 C. 6.022 x 10^33 D. 6.022 x 10^2.3 E. none of the above