A single penny has a mass of 2.5 g. Abbie and James each measure the mass of a penny multiple times. Which statement about these data sets is true? Penny masses (g) Abbie's data James' data 2.5, 2.4, 2.3, 2.4, 3.0, 3.3, 2.2, 2.4, 2.5, 2.6, 2.6 2.9, 3.8, 2.9 O Abbie's measurements are both more accurate and more precise than James'. O Abbie's measurements are more accurate, but less precise than James'. Abbie's measurements are more precise, but less accurate than James'. O Abbie's measurements are both less accurate and less precise than James'.

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.