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How many grams of sodium hydroxide (NaOH) are needed to prepare a 0.700 molal solution using 700.0 grams water?
Molar mass of NaOH = 40 gMolality = 0.700 mol/kgMass of water = 700.0 g =0.700 kgMass of NaOH = 0.700 x 0.700 x 40 = 19.6 g
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A 473mL solution of calcium hydroxide has a pOH of 1.025. Calculate the mass of calcium hydroxide required to prepare this solution
Mass of calcium hydroxide =47.2g
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1)Prepare n-butanyl bromide from n-butane
2)Prepare Ethyl bromide from n-butane
3)Prepare 1-Butanol from n-butane
4)Prepare 2-Butene from n-butane
1) CH3-CH2-CH2-CH3 + Cl2 ---gt; CH3-CH2-CH2-CH2-Cl + HCl CH3-CH2-CH2-CH2-Cl + KOH (dry) --gt; CH3-CH2-CH2=CH2 CH3-CH2-CH2=CH2 + Br2/H2O2 --gt; CH3-CH2-CH2-CH2-Br CH3-CH2-CH2-CH2-Br + KOH (aq) --gt; CH3-CH2-CH2-CH2-OH + KBr CH3-CH2-CH2-CH2-OH + NaBr/H2SO4...
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how many grams of NaCl should be weighed to prepare 1.00L of 601 ppm solution of Na+? how many grams of NaCl should be weighed to prepare 1.00 L of XYZ ppm solution of Na+?
Quantity of NaCl =4.72g
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A 500 mL solution was made with strontium hydroxide. The pH was tested and was measured to be 13.45. How many grams of strontium hydroxide was used to make the solution?
Strontium Hydroxide ionizes in water to produce the strontium ion and the hydroxide ion. Note that Sr(OH)2 is slightly soluble in water. Sr(OH)2 ⇌ Sr2++ 2OH−I 0.1475 M − −C −x +x +2xE 0.1475−x x 2xKb=[OH−]2[Sr2+][Sr(OH)2]Kb=(2x)2⋅(x)0.1475−x=6.5×10−3Solve...
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Calcium hydroxide and phosphoric acid react to form calcium phosphate and water. Find the moles of water, if you have 6.50 moles of calcium hydroxide.
Solution:The balanced chemical equation:3Ca(OH)2 + 2H3PO4 → Ca3(PO4)2 + 6H2OAccording to the equation above: Moles of Ca(OH)2 / 3 = Moles of H2O / 6Moles of Ca(OH)2 = Moles of...
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how will you prepare 50mills of 50 millimoles solution of potassium hydroxide and calcium hydroxide given that their molecular weight are 56.1g/mol and 74.0g/mol respectively
CM = n/Vn = m/M1) 0.05 M = n/0.05 Ln (KOH) = 0.05/0.05 = 1 molm (KOH) = n x M = 1 x 56.1 = 56.1 gTo prepare 50mills...
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Calcium hydroxide is a strong, moderately soluble base. How many moles of calcium hydroxide are needed to neutralize 0.0900 moles of nitric acid?
Ca(OH)2 + 2HNO3 = 2H2O + Ca(NO3)2 0.0900 mol HNO3 x (1 mol HNO3 / 1 mol Ca(OH)2) = 0.0900 mol Ca(OH)2
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Ten grams of calcium carbonate was produced when carbon dioxide was added to lime water (calcium hydroxide in solution). What volume of carbon dioxide at STP was needed
CO2 + Ca(OH)2 = CaCO3 + H2Om(CaCO3) = 10.0 g(10 g CaCO3 / 1)(1 mol / 100.1 g)(1 mol CO2 / 1 mol CaCO3)(22.4 L STP / 1 mol) = 2.24 L CO2 STP
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Calcium hydroxide is reacted with hydrochloric acid. What is the weight of calcium chloride produced if 0.15N of hydrochloric acid is used and 26 kilograms of calcium hydroxide are the raw materials?
Ca(OH)2 + 2HCl —> CaCl2 + 2H2O0.15N (HCl) = 0.015kg = 15gNo of moles of HCl = 15/(2*35.5) = 15/71 = 0.211mol/dm3With HCl as the limiting reagentand molar mass of...
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