Assume the mass of the star is 60. g. Calculate the density. Use correct number of sig figs. A 0.7 g/mL
B 4 g/mL
C 0.67 g/ml
D 4.0 g/ml
answer ASAP

In vapor-liquid equilibrium in a binary mixture, both components are generally present in both phases. how many degrees of freedom are there for such a system? the reaction between nitrogen and hydrogen to form ammonia occurs in the gas phase. how many degrees of freedom are there for this system? steam and coal react at high temperatures to form hydrogen, carbon monoxide, carbon dioxide, and methane. the following reactions have been suggested as being involved in the chemical transformation:

Which of the following is not true about the atomic model of substances?

Who discovered a pattern to the elements in 1869?