Question 9 A glass is to be manufactured with the following composition by weight: Component Silica: SiO2 % by weight 72 Soda: Naz0 14 Lime: Cao 11 Magnesia: Mgo Calculate the batch recipe in terms of the required weights of starting materials. The following information is given: Na,Co, → Na,0 + Co, ↑ (flue) Caco, → Cao + co, ↑ (flue) MgCO, → Mg0 + Co, ↑ (flue) (Relative Atomic Masses are: C = 12, O = 16, Na = 23, Mg = 24, Si = 28, Ca = 40)

Question 9 A glass is to be manufactured with the following composition by weight: Component Silica: SiO2 % by weight 72 Soda: Naz0 14 Lime: Cao 11 Magnesia: Mgo Calculate the batch recipe in terms of the required weights of starting materials. The following information is given: Na,Co, → Na,0 + Co, ↑ (flue) Caco, → Cao + co, ↑ (flue) MgCO, → Mg0 + Co, ↑ (flue) (Relative Atomic Masses are: C = 12, O = 16, Na = 23, Mg = 24, Si = 28, Ca = 40)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Using the AG° values in the table below, calculate the AG; for CaCO3. Са (8) + 3/2 О2 (9) + С (graphite) > СаСОз (s) AG° = ? kJ/mol Reaction AG°, kJ/mol С (graphite) + O2 (9) —+ СО? (9) -394.4 2Ca (s)+ O2 (9) → 2CaO (s) -1206.6 CACO3 (s) → CaO (s)+ CO2 (9) 131.4
Hydroxyapatite, Ca10(PO4)6(OH)2 , has a solubility constant of Ksp = 2.34×10−59, and dissociates according to Ca10(PO4)6(OH)2(s)↽−−⇀ 10Ca2+ (aq) + 6PO3−4 (aq) + 2OH− (aq) Solid hydroxyapatite is dissolved in water to form a saturated solution. What is the concentration of Ca2+ in this solution if [OH−] is fixed at 9.60×10−4 M ?
A medal must contain a minimum of 6 grams of gold (MW = 196.97 g/mol) and at least 92.5% silver. A total of 340 medals were awarded. Suppose each medal is made by coating a 60-mm diameter, 3-mm thick, gold-free silver alloy disk with gold via electrolytic deposition using a gold (III) solution, Determine the following:a) Time required in hours to finish plating all the gold medals with minimum gold content if the available electricity source can deliver 50 amperes of current
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