physics

posted by .

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.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. CHEMISTRY

    A glass vessel has a mass of 53.8718 g when evacuated (no air). When filled with a liquid of density 1.319 g mL-1 it has a mass of 255.7390 g and when filled with an unknown gas at 752.3 torr and 16.12°C it has a mass of 54.2483 g. …
  2. Math/Standard and scientific notation

    Express each measure in standard form. (One more thing by the way you need this few prefixes) Tera= 10 to the 12th power Giga= 10 to the 9th power Mega= 10 to the 6th power Kilo= 10 to the 3rd power Pico= 10 to the -12th power Nano= …
  3. Chem 20

    Calculate the mass of strontium hydroxide required to make a 450-mL solution with a pOH of 4.00. Step 1: Find pOH. I found that pOH is 10. The next steps is where I'm stuck. Step 2 :Calculate the hydroxide ion concentration. Express …
  4. PHYSICS

    Express following measurements in scientific notation. 1. a) 5800 m I don't even get what scientific notation is. In my book its ays, that in Scientific notation, the numerical part of a measurement is expressed as a number between …
  5. Chemistry

    Calculate the energy in kJ/mol of a mol of photons in the ultra-violet region of the electromagnetic spectrum that has a wavelength of 2.88 × 10-7 m. Express answer in scientific notation. I got 4.16 * 10^8 but the correct answer …
  6. Math

    the mass of earth is 5.97 x 10^24 kilograms. The mass of the moon is 7.34 x 10^22 kilograms. Part A: What is the combined mass of earth and the moon?
  7. Math

    These problems I really don't understand and really need serious help :) 1.What the product of (5.1 x 10^3)x (3.2 x 10^3)?
  8. Algerbra

    These problems I really don't understand and really need serious help :) 1.What the product of (5.1 x 10^3)x (3.2 x 10^3)?
  9. math

    These problems I really don't understand and really need serious help :) 1.What the product of (5.1 x 10^3)x (3.2 x 10^3)?
  10. math

    These problems I really don't understand and really need serious help :) 1.What the product of (5.1 x 10^3)x (3.2 x 10^3)?

More Similar Questions