- What is the molar mass of Al203? 2. What is the molar mass of Zn(NO3)2? 3. How many moles are there in a 25.5 gram sample of NaOH? 4. According to the following balanced chemical equation, how many moles of iron will react with 0.455 moles of chlorine? 2Fe(s) + 3Cl2(g) 2FeCI3(s) 5. How many atoms are there in 35.7 mole sample of silicon? 6. After balancing the following equation, what would be the coefficient that would be needed for Na? NaN3 Na + N2 7. Convert 41 °F to °C 8. If room temperature is 25 °C, what is the same temperature in Kelvin? 9. How many electrons will sodium gain or lose when it forms an ion? 10. How many electrons will oxygen gain or lose when it forms an ion? 11. What is the formula for the compound formed from Mg and S? 12. What is the formula for the calcium ion? 13. How many electrons does sulfur have in its outer most shell? 14. How many electrons does aluminum have in its outer most shell?
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