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Balancing Equations Chemistry

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Added on  2020-05-28

Balancing Equations Chemistry

   Added on 2020-05-28

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MODULE 1 SCENARIO-BASED PROBLEMScene 2Q1. Chemical equation for:a)Magnesium nitrate. Mg(NO3)2b)Calcium nitrate. Ca(NO3)2c)Sodium sulfate. Na2SO4Q2. Writing a balanced chemical reaction equations for the following solutiona)magnesium nitrate with sodium sulphate Mg(NO3)2(aq)+Na2SO4(aq)→2NaNO3(aq)+MgSO4(aq)b)b) calcium nitrate with sodium sulphateCa(NO3)2(aq)+Na2SO4(aq)→2NaNO3(aq)+CaSO4(s)Q3. Based on the solubility table, calcium sulphate will precipitate out since it is isoluble in water. When solution of the sodium sulphate is added to magnesium nitrate, the solution remains colorless. But when sodium sulphate is added to calcium nitrate solutions, a white precipitate is formed, thus distinguishing beteheen the two solutions (magnesium nitrate and calcium nitrate).Q4. Relative atomic mass of Calcium carbonatea)relative atomic mass of Ca 40.08amu x 6.022×1023atomsb)relative atomic mass of C 12.01amu x 6.022×1023atomsc)relative atomic mass of O 16.00amu x 6.022×1023atomsd)molar mass of CaCO3 100.09amuQ5. If one litre of calcium carbonate solution contains 5.34 x 10-3 molThe concentration is: 5.34×10−3molLm=n×MWn=5.34×10−3;MW=100.09m=5.34×10−3×100.09=0.5344806g
Balancing Equations Chemistry_1
Therefore,Calcium carbonate concentration ¿0.5344806g/LQ6. As compare with the standards cited concentration, water with 0.5344806g/L can be considered soft waterScene 2Q7. The electron dot structures and Lewis structures of hydroxide, methanal and fluoride are as follows:a)Hydroxide OH-b)Methanalc)Fluoride Q8. the Lewis structures of water, sulfate, and phosphatea)WaterSulfate
Balancing Equations Chemistry_2

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