PC 101 Final Exam Quizlet with perfect answers needed 2024

Is this a true statement? All matter can be charged and magnetized. Explain your answer. correct answersNo, all matter can be charged, only 3 metals can be magnetized. Determine the current through a 50 ohm resistor positioned in a 10 volt circuit? Use either V = IR or P = IV correct answersI = V/R = 10/50 = 1/5 Amp What 2 things can you do to a metal wire to DECREASE its resistance? correct answers1) Decrease its length and 2) Increase its thickness How is a positive charge created? What happens to which subatomic particle? correct answersElectrons are lost. If you start with 200 grams of a radioactive substance, how much would be left in 50 days, if the half-life of this substance is 10 days? correct answers6.25 grams Producing a beta particle (0/-1 e) is what type of change? correct answersnuclear Decomposing water into H2 and O2 gases is what type of change? correct answerschemical Running a fission reactions of U-238 is what type of change? correct answersnuclear Filtering chalk and water is what type of change? correct answersphysical Testing for salt by adding silver nitrate to create a white precipitate is what kind of change? correct answerschemical Give the Lewis Dot structure for a single Oxygen atom. How many bonding sites does it have? correct answers6 total valence electrons, 2 different pairs and 2 lone electrons (bonding sites) Using the balanced equation and the PT, determine the recipe analysis for the mass of this reaction on paper. Then create a proportion to determine how grams of O2 gas can be produced form 10.0 g of KClO3. 2 KClO3 -------> 2 KCl + 3 O2 correct answersapprox 3.9 grams O2 from 245.2g KClO3/96g O2 = 10.0gKClO3/x and cross multiply Using the balanced equation and the PT, determine the recipe analysis for the mass of this reaction on paper (row 3). Then create a proportion to determine how grams of KCl can be produced form 5.0 g of KClO3.