Posted by **Katrina** on Sunday, September 17, 2006 at 4:50pm.

when i calculate the density from my measurement,mass=154.4, volume=175.00,and got 0.8823 g/cmexp3 as the answer,so do i have to express the answer in scientific notation or round off it?

No, you do not need to express the answer in scientific notation unless the problem asks for it. Your question about rounding confuses me a little. You have 4 significant figures (sf) in 154.4 and 5 sf in 175.00; therefore, you are allowed 4 significant figures in the answer. I found 154.4/175.00 = 0.8822857. Rounded to 4 sf that will be 0.8823. I hope this helps.

## Answer this Question

## Related Questions

- Chem 20 - Calculate the mass of strontium hydroxide required to make a 450-mL ...
- Math/Standard and scientific notation - Express each measure in standard form. (...
- PHYSICS - Express following measurements in scientific notation. 1. a) 5800 m I ...
- CHEMISTRY - A glass vessel has a mass of 53.8718 g when evacuated (no air). When...
- Chemistry - Calculate the energy in kJ/mol of a mol of photons in the ultra-...
- Scientific Notation - Just started learning about the scientific notation, and ...
- Astronomy - The volume of a ball is given in terms of its radius by V=4π3R3...
- Math - the mass of earth is 5.97 x 10^24 kilograms. The mass of the moon is 7.34...
- physics - A flask has a mass of 78.23 g when empty and 593.63 g when filled with...
- Chemistry - hmmm...I just can't seem to get it. It looks like I got it right up ...

More Related Questions