Aim To Find the Number of Moles of Water of Crystallisation in Copper (II) Sulphate salt. Introduction Water of crystallisation is the term given to the molecules of water that are used to build up a crystal lattice in some ionic compounds.In copper II sulphate the blue crystals would be impossible without using water molecules to act as ’scaffolding’ within the structure CuSO4.5H2O. When this is heated the water molecules are driven off and the blue crystals become a white powder. As most
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| The Chemistry of Natural Waters | Chem 111 Sec 104 | | Hyunjung Hwang | 11/6/2012 | TA: Sarah Boehm‚ Group members: Rachel Hoffman‚ Dan Hirt | Introduction Water hardness is a major part of overall water quality that affects many industrial and domestic water users. Water is considered hard when there are high concentrations of the divalent cations Magnesium and Calcium; water hardness is considered as the sum of both the calcium and magnesium concentrations and expressed as
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Honors Chemistry Notes Unit 1 • Matter- Anything that has mass and volume and anything that has the property of inertia. -Quantitative. -Can be solid‚ liquid‚ gas. • Inertia- Ability to resist changes in its motion. -Change in motion could be terms of speed or distance. -A car that moves after it has stopped. • Mass- The amount of matter in an object. -The balances that you use in laboratory measure mass‚ not weight. -SI unit is kilogram (kg). • Conservation of Mass- The law states that
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4 = 6.9/ 7 * The atomic mass is the mean of all the isotopes of Lithium in nature; round the number * Isotopes of a specific element have a varying number of neutrons * The number of neutrons do not affect the chemistry because they are not electrically active; neutral * Mendeleev organized the elements according to their atomic mass but today we organized them according to their atomic number * Staircase line separates the metals from the non-metals
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CAFS PRELIMINARY EXAM – STUDY NOTES Wellbeing: - Wellbeing is the condition or state of a human being‚ animal or plant. There are five types of wellbeing… * Physical wellbeing: This is a person’s physical condition‚ including their appearance and their internal health. * Socioemotional wellbeing: Social wellbeing involves a person’s relationships with others and how that person communicates‚ interacts and socialises. Emotional wellbeing relates to a person’s state of mind‚ emotions or
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AP Chemistry Name _________________________________ Period ___ Date __/__/__ 4 Reactions in Aqueous Solution Precipitate Practice #1 Write balanced molecular and detailed ionic equations. Strike out any spectator ions. 1. Solutions of lead nitrate and potassium chloride are mixed. Pb(NO3)2(aq) + 2 KCl(aq) PbCl2(s) + 2 KNO3(aq) Pb2+ + 2 NO3- + 2 K+ + 2 Cl- PbCl2(s) + 2 K+ + 2 NO3- 2. Solutions of sodium sulfate and calcium bromide are mixed. Na2SO4(aq)
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Who normally conducts the preliminary investigation? What are some of the actions the first responders can take once they arrive at the scene of the crime? Since the preliminary investigation starts when the first emergency call is received‚ it is typically administered by the patrol officers who are first to respond to the scene. First responders can either preserve or contaminate the crime scene‚ which can possibly result in either the success or failure of the prosecution. Accordingly‚ the steps
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Chapter 5 Notes The study of energy and its transformations is called thermodynamics. An aspect of thermodynamics that deals with the relationships between chemical reactions and energy changes involving heat is called thermochemistry. 5.1 The Nature of Energy Energy is defined as the capacity to do work or produce heat. Work is the energy used to cause an object with mass to move. Heat is the energy of an object that causes its temperature to increase. Kinetic and Potential Energy
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Aufbau principle Cr: [Ar] 4s1 3d5 Many times‚ half-filled and completely filled orbitals are unusually stable‚ so sigma electrons can rarely end up promoted to pi electrons Types of electrons Valence: outer electrons responsible for chemistry Transition metals: Any
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Preliminary Analysis Samples tested in this lab are sample numbers: 1‚2‚3‚4‚5‚8‚9‚10‚14‚16‚22‚ and 23. Using various test‚ we found characteristics about each individual sample which gave us a better idea on whether the sample is living‚ dead‚ organic‚ or inorganic. This is the same as our proposed study because we are trying to see if samples are dead‚ alive‚ organic‚ or inorganic. Notices our results are based on the whole group of tested samples‚ some results in recorded data as a whole
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