Chemical element

This change in the arrangement of atoms most of the times results in the physical properties of the elements that are interacting. As of the experiment, when the copper wire and copper (II) sulfate were put together, no physical change was observed. Moreover, copper is not an active metal and does not react with diluted acids. This leads to the conclusion…

Purpose: The objective is to separate the heterogeneous mixture of salt, iron filings, and salt into each pure form using filtration, evaporation, and magnetism. Background: When separating a mixture, preferably to separate a mixture that includes a soluble liquid and a insoluble solid, filtration is the best because solid molecules are bigger than liquid molecules. A filter contains pores that are small enough to let small partials though the pores while holding back the larger particles.…

Determining the Chemical Formula of Hydrated Copper (Ⅱ) Sulfate Using the Empirical Formula Introduction In this experiment, the molecular formula of hydrated Copper (Ⅱ) Sulfate will be determined. In order to determine the molecular formula, the empirical formula is needed which is the ratio of moles of one substance to another. In this experiment, it is the ratio of Copper (Ⅱ) Sulfate to water. CuSO₄・XH₂O The empirical formula can be determined if the moles of the compared substances…

With A = 52.4, and B =119.8. Moreover, some previous works overlooked that the increase in temperature is always accompanied by the increase in water vapour pressure, and lower CO2 partial pressure respectively. Consequently, according to Henry’s law, the amount of dissolved CO2 in water is also decreased. Thus, the increase in temperature will increase the kinetics of precipitation, and also reduce the supersaturation of FeCO3 as a result of lesser amount of dissolved CO2 in the water. B.…

Introduction Copper is an extremely significant element in many ways whether it be biological, environmentally, or even economically, and each of its many forms has unique characteristics that serve many different purposes. In this experiment, chemical reactions were conducted on copper that represented its reactivity in different chemical environments. Therefore, the purpose of this experiment was to explore the copper cycle through the identification of different reaction types that occurred…

In this experiment I will prepare a pure sample of an element (copper) by making a copper solution and then plating it out onto a more active metal. HYPOTHESIS: Because Copper is a more active metal than Iron, I believe the copper solution will plate onto the iron nail. PURPOSE: The purpose of this experiment is to observe reactions between metals depending on which one is more active and observe how to clean pennies, while making a copper solution. RAW MATERIALS: Two plastic cups Clover…

Carbohydrates have the following basic composition. They are molecular compounds made from three elements: carbon, hydrogen and oxygen. Monosaccharides are simple sugars with multiple OH groups. Based on number of carbons 3, 4, 5, 6, a monosaccharide is a triose, tetrose, pentose or hexose respectively. Disaccharides are condensation products of two monosaccharide units; examples are maltose and sucrose. A disaccharide is 2 monosaccharides covalently linked molecule. Polysaccharides are polymers…

Lingrui Ge Lab report October 18, 2015 Experiment #5 Separation and Qualitative Analysis of Cations CHEM 1315-088  Purpose of the experiment: To identify the substances that are present in a mixture. Materials: Test Solutions and Substances 6 M hydrochloric acid, HCl Sodium bismuthate, NaBiO3 (s) 6 M nitric acid, HNO3 0.1 M potassium thiocyanate, KSCN 6 M ammonia/ammonium hydroxide, NH3 3% hydrogen peroxide, H2O2 6 M sulfuric acid, H2SO4 Sodium bismuthate, NaBiO3 (s) 6 M sodium hydroxide,…

This website proves why the reactions need each other. “The heat produced continues to decompose the potassium chlorate resulting in a very rapid combustion reaction” (Chemical Reactions 2). In order for the combustion reaction to occur, the decomposition reaction needs to happen first in order to produce the heat and oxygen used in the next reaction. Because the reactions depend on each other, the two equations can be…

saved. But there are various medical considerations that might come while applying chemical peels and you must consider all of them without any fault. If necessary, then doctor’s consultations can also be taken so that you can remain at the safest end. There are some specific strategies that need to be followed in details so that future complications can be avoided and you can get a glowing skin. How to apply chemical peels? • Taking proper skin preparation is necessary so that you can start…