Compound a and compound b form an ideal liquid solution. the mole fraction of compound a in the solution is 0.3. the total pressure or vapor pressure above the solution is 94.6 mmhg. the vapor pressure of the pure compound a is 173 mmhg. calculate the vapor pressure of the pure compound b

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.