Which statement describes an arrhenius acid?
it is a proton donor.
it is a proton acceptor.
it produces hydroxide ions in a solution.
it produces hydrogen ions in a solution.

Wind and moving water provide energy. chemical mechanical thermal none of the above

What two categories of toxins were present in the air at dish, texas as a result of the gas pipelines that pass through the area

Can anyone explain 1. review your spectrometry data and use the known elements to identify the star's composition. which unknown elements make up this star? justify your element selections. 2. in parts i and ii of the lab, what happened to the electrons of each element to produce the different colors of light? explain your answers using important terms from the lesson and information provided in the laboratory. 3. stars composed of heavier (more massive) elements are often slightly older than stars made predominantly from hydrogen and helium. based on your data, is the newly discovered star a younger star? explain your answer.