The zinc granules will provide unaccurate results. 1b. Will the density of zinc using granules be greater or smaller? We know that density = mass/volume. Therefore, if zinc granules provide a larger volume with a constant mass, the density would be much smaller.
(4 points) q = m × c × Δt Given: q=? m = 34.720g c = 4.18 j/(g x °C) Δt = 41.6°C - 25.2°C = 16.4°C q = (34.720g) (4.18 j/(g x °C) (16.4°C) q = 2380.13j You are trying to figure out the energy change of the water which is the surroundings in the lab. To do that you must take the mass of the metal, which for me was Aluminum, and multiply it by the heat capacity of the water, which was given, then multiply that by the change in temperature, which is the final temperature of the mixture
Calculate the percent by mass of NaClO in the commercial bleach. (Start with molarity of concentrated NaClO found in part 4. Determine the molarity per mL instead of liter. Next, divide by the density (you’ll have a label of mole/g at this point). Then multiply this by the molar mass of NaClO which has a label of g/mol so all labels cancel.
How do you go from calculated/measured values to accomplishing stated purpose? (4 pts) The purpose of this lab is to determine the exact concentration of an unknown acetic acid solution. Titrations for two different reactions will be performed. Controlled volumes of one reagent are added to a flask containing the other reagent until the equivalence point of the reaction is reached, one between sodium hydroxide (NaOH) and potassium hydrogen phthalate (KHP) and the other between NaOH and acetic acid (CH3COOH). NaOH (aq) + KHP (aq) —› Na+ (aq) + K + (aq) + P2- (aq) + H2O (l) NaOH (aq) + CH3COOH (aq) —› Na+ (aq) + CH3COO- (aq) + H2O (l) The titration of NaOH with KHP will identify the concentration of the NaOH provided.
What is the mass of object 1? __________19.5g_____________________ An object’s volume is the amount of space it takes up. The volume of an irregular object can be measured by how much water it displaces in a graduated cylinder. Place object 1 into the Graduated Cylinder. What is the volume of object 1?
For this lab, the density of water will be 1 gram/cubic centimeter. The mass of a certain substance is the amount of matter it contains. The volume of a certain substance is the amount of space the matter takes up. The density of a solution will depend on the solute, and the concentration of the solution. The concentration of a solution is the amount of solute that is dissolved into each unit of solvent.
Adam Workman Lab, Week #1 Balance Lab Introduction The purpose of the Balance Lab experiment was to become familiar with the ChemLab software and to become familiar with different mass measurement methods. During the experiment, three different mass measurement methods were used to determine the mass of copper slugs as well as the mass of two different unknown weights: the direct weight method, the weighing by difference method, and the average mass method using both a centigram balance and an electronic balance. Using the centigram balance, the weight of a single copper slug, in grams, is determined using both the direct weight and weight by difference methods. Likewise, using the electronic balance, the same copper slug is measured by direct weight and weighing by difference methods. Using the same electronic balance, the average mass of five copper slugs, in grams, will be determined.
What is the volume of both tanks if the radius of the tank #1 is 15 feet and the height if tank #2 is 120 feet. You must explain your answer using words, and you must show your work to receive credit. - Since the formula for cylinders volume is V=π r² h, you would just plug in the feet and the height. V=3.14*9^2*72 1) 3.14 * 15² *120 2) 3.14 * 225* 120 3) 706.5 * 120 4) 84,780 ft The volume is 84,780ft for one whole tank, but the tanks are half of a cylinder, so that means that the volume would be half of what the whole would be. One tank volume would be 42,390ft.
AP Physics C Lab Report i. Purpose: To use derivatives to investigate the various characteristics of cardboard ii. Materials: Compass, Cardboard, mass balance, ruler, meter stick iii. Procedure: 1. Measure and record the diameter of each of the disks in meters.
The round piece of zinc is not displacing its weight in water for it not to sink. A ship in the other hand is far heavier and has the ability to displace a heavier amount of water than it weights. The slope of equation will be very close to the density of lead which is 11.3g/ml. Graphing the densities shows me how much more denser than iodine the difference in the char the line for lead is much more higher than the iodine line. The amount of water displacement is much more with lead the zinc.