What are the top three sources of U. S. electricity generation? Estimate the overall efficiency of U. S. electricity generation. How does this compare to the efficiency for transportation?

What is the mass of 0.46 mol of mgcl2

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

Using the thermodynamic information in the aleks data tab, calculate the standard reaction free energy of the following chemical reaction: →+p4o10s6h2ol4h3po4s round your answer to zero decimal places.