What is the charge on an ion that contains 16 protons and 18 electrons?

People who practice which of the following diets may run the risk of not getting enough iron. A. Gluten free or vegan diet B. Diet for managing diabetes C. Vegan diet D. Gluten free diet

According to legend, archimedes, who was a famous greek mathematician, was given a crown, which was supposed to be made of pure gold but contained some silver alloy, by king hiero ii of sicily.

Which chemical reaction model is flawed and why? A) 4C2+S8 - > 4CS2 B) 2Fe+3Cl2 - > 2FeCl3 C) 2Na+Cl2 - > 2NaCl D) P4O10+6H2O - > 4H3PO4

How are particles in a gas like people outside of a movie theater?

As a star gives off energy in a thermonuclear reaction, the mass of the star 1. decreases 2. increases 3. remains the same

Which of the following is fact-based science rather than part of a belief system a. astrology b. paranormal investigation c. chemistry d. philosophy e. cultural rituals

Meanders form when a river flows across bedrock? true or false

Tank a contains a mixture of 10 gallons water and 5 gallons pure alcohol. tank b has 12 gallons water and 3 gallons alcohol.

Why won't water reform to an ice cube if you freeze it?

For what reasons can a theory be changed