What are cells are made out off?

Using the Periodic Table, which of the following two elements are in the same group? Question 2 options: A. Ca and Co B. O and Cl C. Ne and Ar D. Li and Mg

The charge of the atom is based on the 1. number of protons and electrons 2. number of protons and neutrons 3. number of protons, neutrons, and electrons 4. atomic number

32p is a radioactive isotope with a half-life of 14.3 days. if you currently have 38.1 g of 32p, how much 32p was present 9.00 days ago?

Which of these is an example of an evirourment changing slowly

Propane (c3h8) burns in oxygen to produce carbon dioxide gas and water vapor. (a) write a balanced equation for this reaction. (use the lowest possible coefficients. include states-of-matter under the given conditions in your answer.)

The force that moving, charged particles exert on one another is called? a. Contact force b. Intermolecular force c. Gravity d. Electromagnetic force

Which of the following types of electromagnetic waves has a frequency greater than ultraviolet waves? A) X rays B) infrared waves C) microwaves D) visible light

For each metal complex give the coordination number for the metal species. m (nh34cl2

Particles in a liquid move around just as freely as particles in a solid. True or False

How did aristotles idea of matter differ from that of scientists