A 1 L sample from Tempe Town Lake has a pH of 3.57. Exhaust from cars on nearby highways often mixes with rain to form HNO3. Use this information to answer the following questions. 1.What is the concentration of H+ ions in the sample?

Which element is the least metallic between cadmium, silver, zinc, or iron?

What is a for cio3-, the chlorate ion?

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.