CHEM 121 pre-lab Speech or Presentation Example | Topics and Well Written Essays - 500 words

CHEM 121 pre-lab - Speech or Presentation theoretical account(Hints volume = area x thickness. 1 mL = 1 cm3) Express your answer in cm2 and in miles2.7. Lets assume that your secondary education has led you to rob arto a greater extentd cars. In your current heist, if you were faced with bags of coins that weighed the same, which bag would you take pennies, nickels, dimes, or quarters? Which bag contains more money? Important selective information a penny weighs 3.09 g, a nickel weighs 4.88 g, a dime weighs 2.25 g, and a quarter weighs 5.68 g. (Naturally, show your act upon for full credit.) Hint calculate the monetary density of each coin.Clearly monetary density of dimes is the highest and therefore, I would take the bag containing dimes as it contains more money. However, if I can afford to take one more bag I exit not like to leave the quarters bag as well.8. What would be the effect on your calculated value of the density of pee if there was an air bubble in the pipet when you transferred the water into the empty vial? Would the value be higher(prenominal) or lower or would there be no change? Explain your answerIf there was an air bubble in the pipet while transferring the water in the vial for density measurement, the metric value of density will be lower than the actual value as the volume has been measured on higher position erroneously due to entrapped air bubble.9. What would be the effect on your calculated value of the density of water if empty vial had not been completely dried before weighing? Would the value be higher or lower or would there be no change? Explain your answerThe measured value of density of water will not be affected in this case as the mass of empty vial is deducted to calculate the mass of the measured volume of water. Therefore, whether the vial was completely change or not will not affect the