What ion must be present for a compound to be considered a base?

What do weather and climate have in common? A. Both affect average ocean temperatures. B. Both are averages measured over a long period of time. C. Both apply to a certain region. D. Both change from day to day.

How is the nucleus of an atom split? radioactive decay chemical reaction collision of atoms collision with a high-speed particle

After Frida stops exercising, she continues to breathe heavily. What is most likely occurring in her body? Heavy breathing during exercise has produced an oxygen surplus in her muscles. This oxygen is being transported to her lungs.

What are the two changes in matters

Calculate oxidation number of C2H2O4

What substances have an arrhenius base?

Which of the following correctly states the relationship between temperature and the solubility of a substance in water? Group of answer choices The solubility of a substance in water increases as the temperature rises, especially for gases.

How many moles of water are made from complete reaction of 1.4 moles of hydrogen gas? Given the reaction: 2H2 + O2 → 2H2O

A scientific law is 1. A university accepted conclusion based on testing 2. Always changing a new evidence is presented 3. Based on new evolving theories 4. Often debated in the scientific community 5. One step toward forming a theory

12 Two molecules of HBr collide and then form H2 and Br2. During the collision, the bonds in the HBr molecules are