CHEM - Unit 6 Review
Quiz by Brooke Hughes
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10 questions
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- Q1Which of the following statements are CORRECT? I. The molecular formula is the smallest whole-number ratio of atoms. II. There are 6.02 x 10^23 atoms in 1 mole. III. A mole is another name for a molecule.I and IIII onlyIII onlyII and III45sEditDelete
- Q2Which of the following has an empirical formula of C3H5?60sEditDelete
- Q3To determine the molar mass of an element, one must know the element's —number of isotopes.atomic mass.atomic number.Avogadro constant.30sEditDelete
- Q4The molar mass of NO2 is defined as the mass of —2 moles of NO2.1 mole of NO2.2 molecules of NO2.1 molecule of NO2.30sEditDelete
- Q5Which of the following statements are correct? I. The volume of 1 mole of a gas is 22.4 L at STP. II. Standard temperature is 273 K or 0°C. III. Standard Pressure is 1 atm.I, II, and IIIIII onlyI and IIII and III45sEditDelete
- Q6Which of the following is the representative particle for COVALENT compounds?electronsatomsmoleculesformula units30sEditDelete
- Q7What is the correct formula to calculate Percent Composition?30sEditDelete
- Q8Which pair consists of a molecular formula and its corresponding empirical formula?45sEditDelete
- Q9ONE mole is equal to all of the following EXCEPT —6.02 x 10^23 molecules.the number of atoms in exactly 28 grams of carbon.the molar mass of an element or compound.22.4 Liters30sEditDelete
- Q10Which represents the greatest molar mass?1.0 mol Fe1.0 mol Al1.0 mol Cu1.0 mol Zn60sEditDelete
