The temperature of a sample of water in the liquid phase is raised 30 degrees Celsius by the addition of 3762 J. What is the mass of the water in grams? A. 0.03
B. 0.30
C. 30
D. 300

What is the independent variable in this investigation? mass volume sample number substance density

When a septic tank backs up a goes in to clean it out

In the following table, all the columns for the element calcium are filled out correctly. element electron structure of atom electron structure of ion net ionic charge calcium 1s22s22p63s23p64s2 1s32s22p63s23p64s1 +1 true false