Chemistry Math and Labware + Data and Report Submission C

How many liters is 95.7 mL?

(95.7 mL) 1×10−3 L

/ 1 mL

.0957L

Determine the relative order of the metric prefixes of kilo-, micro-, centi-, and milli-.

For the same base unit, micro- is less than milli-, which is less than centi-, which is less than kilo-

Identify the value of each number presented in scientific notation.

7.32×10−47.32×10−4

→ 0.000732

4.65×10−34.65×10−3

→ 0.00465

4.65×1034.65×103

→ 4650

7.32×1067.32×106

→ 7320000

A football field is 120 yards by 53.333 yards. What is the area of the football field in acres if 1 acre=43560 ft2? Use correct significant figures when answering this question.

Type answer:

1.3

To isolate a single variable when rearranging equations, move all other variables to the

To isolate a single variable when rearranging equations, move all other variables to the other side of the equation by using the opposite function on them and remembering to perform that operation on both sides of the equation.

Make sure the rearrangement has the target variable in the numerator, not the denominator.

Knowing that one day is 24 hours, how many days is 90.5 hours?

3.77

When heating a solution to boiling on a hot plate, start by

When heating a solution to boiling on a hot plate, start by starting and stabilizing the stir function. Then, turn the heat to a medium heat setting to start. If necessary, turn up the heat setting after waiting about ten minutes without seeing boiling.

Which procedure cannot be performed on a hot plate, requiring a Bunsen burner instead?

Heating a crucible to remove water from a hydrate

What is the purpose of stirring a solution while it is being heated?

To help evenly distribute heat throughout the solution

Where should glassware be stored after it is cleaned?

In a drying oven, or designated locations such as drawers or buret racks

Identify tools that are ideal for cleaning glassware.

Brushes

Detergent and water

Determine where each type of cleaning solution should be discarded after use.

Solvent used to rinse chemicals out of a beaker

→ waste container

Water used to rinse detergent out of a flask

→ sink

Acid solution used to clean a crucible

→ waste container

Based on everyday experience, state (in words) the relationship between tire pressure and temperature. Look at the data and see if the numbers support your statement.

Temperature and pressure are directly proportional. This means that when the temperature increases the tire pressure will increase. When the pressure decreases the temperature will also decrease. This proportionality is seen in tires. A tire expands when the temperature increases, and when the temperature decreases a tire will deflate. The numbers in the data generally support this theory. When the temperature increases the tire pressure increases, and when the temperature decreases the pressure decreases.

Compare the calculated pressure to the two visually interpolated values (Steps 2 and 6a). Briefly discuss any discrepancies.

There are discrepancies between the calculated and visually interpolated values, because the calculated value is more accurate. The visually interpolated value was based on what we perceived was the correct value. The calculated value is the correct value based on the equation of the line.

Compare the calculated temperature to the two visually interpolated values (Steps 2 and 7a). Briefly discuss any discrepancies.

The calculated temperature is more accurate than the visually interpolated values. The calculated data was based on the best-fit equation that was found for the graph. The interpolated values is an estimated value that was determined by eyeballing the graph and estimating where the point would be plotted.