Worksheet1-Key - CH301 Worksheet 1 Answer Key: High School...

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CH301 Worksheet 1 Answer Key: High School Chemistry Questions. For each problem, identify the kind of question BEFORE answering it. 1. A 25 kg ball has a kinetic energy of 225 J. What is the speed of the ball? What kind of question is this? energy 4.24 m/s 2. How many molecules of water are there in 100 mL of water? (The density of water = 1.000 g/ml.) What kind of question is this? stoichiometry 3.34 x 10 24 molecules 3. Given that the atomic mass of carbon is given as 12.0107 g/mol, what are the approximate relative abundances of the two isotopes 12 C and 13 C? What kind of question is this? isotopes 98.93% 12 C, 1.07% 13 C 4. In the electrolysis of 2H 2 O b 2H 2 + O 2 , how many atom of O in O 2 are made from 4 g of H 2 O? What kind of question is this? stoichiometry 1.34 x 10 23 molecules 5. What are the most likely ionic forms of (a) sodium and (b) calcium? What kind of question is this? periodic trends (a) Na + ; (b) Ca 2+ 6. What is the product of a reaction between metallic lithium and oxygen, O
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Worksheet1-Key - CH301 Worksheet 1 Answer Key: High School...

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