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Chemistry
Chart of energy changes dissolving MgSO4, NaOH and CaCl2.
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Can't do charts, graphs, etc on the board.
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Calculate the number of milliliters of 0.738 M NaOH required to precipitate all of the Mg2+ ions in 148 mL of 0.541 M MgSO4
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How many mols MgSO4 so you have? That is moles = M x L = 0.541 x 0.148 = ? Using the cofficients in
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Which of the following is a correctly balanced reaction equation?
CaCl2 + NaOH --> NaCl2 + Ca(OH) CaCl2 + 2NaOH --> 2NaCl +Ca(OH)
Which of the following is a correctly balanced reaction equation?
-CaCl2+ NaOH -> NaCl2+ Ca(OH) -CaCl2 + 2NaOH -> 2NaCl + Ca(OH)2
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#2 is the CORRECTLY balanced equation. #4 DOES HAVE EQUAL NUMBERS OF ATOMS ON EACH SIDE but the
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Which of the following is a correctly balanced reaction equation?
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just make sure each atom present has the same amount on both sides of the equation.
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5) Which of the following is a correctly balanced reaction equation? Make sure all the compounds are correctly formed.
* 1 point
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2CaCl₂ + 4NaOH --> 4NaCl + 2Ca(OH)₂
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Which of the following is a correctly balanced reaction equation? Make sure all the compounds are correctly formed.
CaCl₂ +
Top answer:
2CaCl₂ + 4NaOH --> 4NaCl + 2Ca(OH)₂
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Alright, I've made a list of reactions that would produce precipatations.
NaCl + Zn CaCl2 + NaOH CaCl2 + Zn CaCl2 + Na2SO4 CuSO4
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Wait, AgNO3 with any unknown with Cl present would form a precipatate. So I can use that to tell
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Dissolving solid CaCl2 H2O in a large volume of water is endothermic to the extent of 14.6 kj/mol. Also given:
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To find the heat of solution of anhydrous CaCl2 in a large volume of water, we need to calculate the
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Dissolving solid CaCl2 H2O in a large volume of water is endothermic to the extent of 14.6 kj/mol. Also given:
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Is that a typo first line. Perhaps should be CaCl2.6H2O. If so just add the two equations to obtain
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An exothermic reaction has dH - so it must be B or E
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