What is the calculated value of the cell potential at 298 k for an electrochemical cell with the following reaction, when the h; pressure is 3.77x10 bar, the h concentration is 1.49 m. and concentration is 5.57x104 m7 the cr l(g)+2cr '(aq) 61'(aq) 2cr(s) v answer the cell reaction as writen above is product-favored (spontaneous) for the concentrations given:

The sum of the oxidation numbers in a neutral compound is always

How is the way a mixture is combined different from how a compound is combined?

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.