Posted by **wesley** on Monday, July 5, 2010 at 12:44pm.

A star is estimated to have a mass of 2 X 10^36 kg. Assuming it to be a sphere of average radius 7.o X 10^5 km. Calculate the average density of the star in units of grams per cubic centimeter

- ap chemistry -
**DrBob222**, Monday, July 5, 2010 at 2:02pm
Since you want density unit in g/cc, I would adjust the starting units, like so.

7.0 x 10^5 km = 1.0 x 10^10 cm (It's easier to do this at the start than at the end for me.)

The volume of a sphere is (4/3)*pi*r^{3} = ?? cc

Then mass = volume x density.

Convert mass to grams and solve for density.

## Answer this Question

## Related Questions

- Chemistry - Neutron stars are composed of solid nuclear matter, primarily ...
- chemistry - Assuming that a neutron star has the same density as a neutron, ...
- chemistry - assuming that a neutron star has the same density as a neutron, ...
- physic - A rotating star expands to become a red giant, increasing its average ...
- Chemistry - A star is estimated to have a mass of 4.4x1026lbs. It has a diameter...
- physics - a star has a mass of 2.0 10 30kg and a radius of 3.4*106m. what is its...
- Physics! - The two stars in a certain binary star system move in circular orbits...
- physic - Neutron stars are extremely dense objects with a mass comparable to the...
- college physics - new planet is discovered orbiting a distant star. ...
- physic - Assuming uniform density, how much would 1.1 cubic centimeters of ...

More Related Questions