The diagram below represents the development of our universe from the time of the big bang until present. Using the diagram and data table below, what does the distance between
the two objects labeled 'A' demonstrate?
Present
Time
Big Bang
Distance
between
galaxies
Time
Ion years 190 light years
55
S00.000 light
6542.000 light years

I do not understand

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?

If a particle has z = 25 and 23 electrons, what is its charge?

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.