Powered by Create your own unique website with customizable templates. This ensures that you are adding acid to water.
The final mass of copper was 9. What's in an ore? I believe that misreading of the meniscus during the measurement of final volume was at fault for this inconsistency in data measurements.
There could be numerous reasons for this, though the primary causation likely stems from a random error. More essays like this: When copper reacts with a strong base, in this case NaOH, the reaction forms metal hydroxides, and these reactions are replacement reactions.
Therefore, about a quarter of the copper compound left the beaker while decanting. In simplest terms, the concentration as percent mass represents the number of grams of copper sulfate in a gram sample of copper sulfate pentahydrate.
Other ions produce colorful solutions, and they can be used to predict what may be in other solutions as well. The percentage by weight of any atom or group of atoms in a compound can be computed by dividing the total weight of the atom or group of atoms in the formula by the formula weight and multiplying by Use the density formula to calculate the density, and then calculate the accuracy and precision of your measurements.
Which of the following is a chemical property of aluminum? The answer to "c" is 1. Calculate the mass of aluminum that can be produced in one day in an electrolytic cell operating continuously at 1. It also means that copper sulfate pentahydrate contains - The third question, you will note, has an extra twist to it.
There were many different types of reactions involved in this experiment. Arrange your data in a table see Fig. The initial and final moles of copper are supposed to be the same, but they are different.
Yet these sort of results were not observed; as discussed previously the volume delivered was in agreement with a molarity that was originally desired.Part Three Resources and Technology, Chapter 5 World Copper Resources, CONTENTS from to 6 percent copper, or between and times the crustal average.
In contrast, rocks generally form from a molten mass such as lava; sedimentary rocks form by the accumu. According to the Law of Conservation of Mass, the mass of the products must equal the mass of the reactants, so logically one would expect that if 2 g of copper was used to start the lab, the lab would result in 2 g of copper.
Chemists compensate for this by expressing the mass of copper sulfate as a percentage of the sample’s total mass. In simplest terms, the concentration as percent mass represents the number of grams of copper sulfate in a gram sample of copper sulfate pentahydrate.
mass of copper that we started with. We will calculate the percent recovery of copper and see how well we did. Notice that we are not calling this percent yield because the product is the same as the main reactant.
The first reaction is an oxidation-reduction reaction shown in equation 1. Write the electron configuration of the alkali metal (m) that reacts with oxygen to yield an oxide, m2o, if g of the metal reacts with g of oxygen to form g of the oxide.5/5(20).
What is the molecular formula of para-dichlorobenzene, an ingredient in mothballs, that has a molar mass of g and a percent composition of % C, % Cl, and % H. Answer = C 6 Cl 2 H 4 Flow Chart For Formula Problems.Download