Practice 10 questions on CHEM212 - CHEM 212 at University of Louisiana, Lafayette. Free AI-generated quiz on uNotes — track your score, retake anytime.
1If sodium (Na) and chlorine (Cl) form an ionic compound, what is its chemical formula?
2
What is the correct Lewis dot structure representation for a neutral atom of oxygen?
3What is the expected charge of an ion formed by aluminum (Al)?
4What is the molar mass of chlorine gas (Cl₂)?
5If a sample contains 5.75 moles of helium (He), how many molecules of helium are in the sample? (Avogadro's number is approximately 6.022 x 10²³ molecules/mol)
6A sample contains 155.8 g of iron (Fe). How many moles of iron are in the sample? (Molar mass of Fe is 55.93 g/mol)
7What is a polar molecule? Select all that apply.
8Balance the following chemical equation: Al + HCl → AlCl₃ + H₂
9A cylinder contains 55.5 moles of gas at a temperature of 750 K and a pressure of 3.00 atm. Using the ideal gas constant R = 0.0821 L·atm/(mol·K), what is the volume of the gas?
10What is the transition from the solid to the gas state called?
