HELP A student conducts an experiment, comparing two objects sliding down two ramps made of different materials but with the same angle The graph below shows the total energy (potential plus kinetic) of each object over timeWhich statement most accurate?

Calculate the number of moles of ethane in 100 grams

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

Substance a is a nonpolar liquid and has only dispersion forces among its constituent particles. substance b is also a nonpolar liquid and has about the same magnitude of dispersion forces among its constituent particles. when substance a and b are combined, they spontaneously mix.