Notion Of Moles And Avogadro's Number

An error that could have been present during the lab includes not letting the zinc react completely with the chloride ions by removing the penny too early from the solution. For instance, the percent error of this lab was 45.6%, which was determined by the subtraction of the theoretical percent of Cu 2.5% and the experimental percent of Cu 3.64% and dividing by the theoretical percent of Cu 2.5%. This experiment showed how reactants react with one another in a solution to drive a chemical reaction and the products that result from the

In conclusion, the dime was able to pull it off and hold more drops than the penny. My hypothesis was incorrect because, I thought the penny would hold more drops than the dime because the penny was bigger and I thought it would absorb more. But the dime held more. Preston and I even ran the tests or investigation three times for each coin. The one question I had was ,what if the penny was stacked 1 time and the dime was stacked one time,would it make a difference ?

For this particular task, I will be explaining what key components are necessary for client workstations to connect to a network and how to access network resources. I will be explaining the key features and functions of each of these components in relative detail. Network Devices: These are mechanisms used to connect computers and other electronic devices together so they can exchange and share files or special resources like printers or fax machines used in big organisations. LAN is the main type of network device used by the community.

Description Pennies have undergone design and composition changes over the years. Just like pennies have several versions, atoms of elements also have different versions of each other called isotopes. In this lesson, we will learn how to find the average atomic mass of the elements from its isotopes. !!! Average Atomic Mass Have you ever gone through a whole bag of multi-colored M&M’s?

.1-amEr (c) Gram molecular mass of HNO3 = Mass of 1-molecule of HNO3x NA = 63 amu x NA = 63 gm X NA = 63 gram NA Solved Example-4:Find out the mass of carbon -12 that would contain 1.0 x1019carbon-12 atoms. Solution : Mass of 6.022 x1023 carbon-12 atoms = 12 g Mass of 1.0 x1019 carbon-12 atoms = 12x1x10 19 g 6.022 x1023 = 1.99 x10-4g Solved Example-5: How many molecules are present in 100 g sample of NH3?

The purpose of this lab was to change pennies from copper to silver to gold, like alchemists have attempted to do in history. Through the data and observations gathered throughout this experiment, it can be concluded that the pennies were not changed into a different element. For example, the density of the penny from 2005; which was the penny that was experimented on to see whether or not it could turn into silver; was 4.62 g/cm3 before the experiment and 4.89 g/cm3 by the end of the experiment. If this copper penny really would have turned into silver, then the density of the penny would be 10.49 g/cm3; which is the density of silver; by the end of the experiment. The penny may have turned silver in color, but this was only because it was plated in the zinc that was added to the beaker of water in the experiment.

The two factors that demonstrate that the traditional system may produce estimates that are different than that of the unit cost are high overheads and indirect cost

On our paper we predicted the amount of pennies that could fit in the boat before it sank. We tested the boat in the water and added pennies one by one. We then calculated the mass of pennies that fit in the boat and the density of it. The purpose of this Lab was to make a boat that holds as many pennies as possible and understand how to calculate

0.735 0.681 Net Cash flow 46,300 42,850 31,760 22,050 13,620 Total Net Cash flow = $156,580 If we use the weighted average cost of

Data for a recent month for the first department follow: units material labor overhead WIP beginning 5,000 $4,320 $1,040 $1,790 units started in process 45,000 unit transferred out 42,000 WIP ending 8,000 cost added during the month $52,800 $21,500 $32,250 The beginning work in process inventory was 80% complete with respect to materials and 60% complete with respect to labor and overhead. The ending work in process inventory was 75% complete with respect to materials and 50% complete with respect to labor and overhead. Required: Assume that the company uses the weighted-average method of accounting for units and costs.

While trying to follow the proper format of finding the total number of equivalent units and cost per those units, I attempted adding the two costs (BWIP and any added) then dividing by the total equivalent units. A part of my mind was telling me that this type of problem that needed Direct Material and Conversion Costs

This was figured out by taking the number of grain produced by each employee, 10 tons, then divided by how many of cars that could be made by the same employee, 4. 10/4 = 2.5. Cost of grain would be the inverted equation, cars per year divided by tons of grain each year, or 4/10 = .4. a) Which country has an absolute advantage of producing cars and grain?

you may find that total amount of costs assigned to Regular model is $765.857,14 and $771.142,86 to Deluxe model. After final computations you can see that the cost of one unit of Regular model is $2,55 and cost of one unit of Deluxe model is $3,87. b) Determine the product costs and profits per

He proved that 6.022 x 1023 particles are present in 1 mole of a gas. which means if there is 1 mole of Hilum atom, then there are 6.022 x 1023 atoms of Helium. If there is 1 mole of sodium chloride, then there is one mole of Na+ and one mole of Cl- ion in the solid. Also, if there is 1 mole of oxygen molecule, therefor there are 6.022 x 1023 molecule of oxygen atoms At Standard Temperature and Pressure 6.022 x 1023 particles of any gas will occupy 22.4L From this, the number of particles can be found when the volume at STP is given.

There are many times when one catches himself/herself trying to decide on which computer system they would like to purchase; whether it’s a new consumer or old consumer of computer systems. Choosing a computer system can be easy for some and difficult for others. When it comes to computer systems, there are many different systems. For example, we have Toshiba, Macintosh, Personal Computer, Dell, and many other different computer systems. Computers are used for many reasons such as school, business, social network, and gaming.