Calculate the answer to the correct number of significant digits

 

You may use a calculator. But remember, not every digit the calculator gives you is a significant digit!

Round off each of the following numbers to the indicated number of significant digits and write the answer in standard scientific notation.

a. 4341 x 10² to three significant digits

b. 93.441 x 10³ to three significant digits

c. 0.99155 x 10² to four significant digits

d. 9.3265 to four significant digits

An arctic weather balloon of is filled with 12.2 L of helium gas inside a prep shed. The temperature inside the shed is 283 K. The balloon is then taken outside, where the temperature is 270 K . Calculate the new volume of the balloon. You may assume the pressure on the balloon stays constant at exactly. Be sure your answer has the correct number of significant digits.