化学问题解决方案

Compute \(3.5 \times 4.48697\). Round the answer appropriately.

Compute \({1240.64}/{12.5}\). Round the answer appropriately.

Compute \(9.3456 + 2140.56\). Round the answer appropriately.

Convert the number \(0.000127\) to scientific notation, then enter the answer using the MasteringChemistry format.

Use your calculator to determine the answer to the following calculation:

\({4.3 \times 10^{-6}}\) is between which two numbers?

Which of the following are equal to \(5 \times 10^{10}\)?

You wash dishes for a chemistry laboratory to make extra money for laundry. You earn \(6\) dollars/hour, and each shift lasts \(75\) minutes. Your laundry requires \(6\) quarters/load.

In Europe, gasoline efficiency is measured in \(km/L\).

A sprinter set a high school record in track and field, running \(200.0\) m in \(21.5\) s. What is the average speed of the sprinter in kilometers per hour?