2023 Chemistry Final Exam

Front

Convert 30 cm to m:

Back

0.3 m

Front

What is the mass of 0.75 moles of (NH₄)₃PO₄?

Back

110 g

Front

This bullseye demonstrates...

Back

Low Accuracy & High Precision

Front

The students measured length during a science experiment, they got 12 cm. But the actual measurement was 14.25 cm. What was the percent error?

Back

15.79%

Front

Express the following in scientific notation: .000457

Back

4.57 x 10⁻⁴

Front

What is the formula to convert Celsius to Kelvin?

Back

K = °C + 273.15

Front

Define molarity (M).

Back

Molarity is the number of moles of solute per liter of solution.

Front

What is the ideal gas law equation?

Back

PV = nRT

Front

Define percent error. How is it calculated?

Back

Percent error = |(Experimental Value - Theoretical Value) / Theoretical Value| x 100%.

Front

What is the significance of significant figures in measurements?

Back

Significant figures indicate the precision of a measurement.