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Problem- If the starting concentration of sodium ions is 0.30 M and the starting concentration of tetraborate ions is 0.15 M at 25 C use an ICE table to find the equilibrium concentrations of sodium and tetraborate ions using the initial concentration. Keq=0.055 Reaction: Na2B4O7•10H2O(s) <-> 2 Na+(aq) + B4O72-(aq) + 10 H2O(l)
Please provide the balanced reaction.
Explain calcium oxide is produced by thermal decomposition of calcium carbonate. Explain what volume of carbon dioxide can be collected at STP if 126 g of calcium carbonate is allowed to decompose
If hydroxide ion is formed, the OH- may react with some of the Fe3+ to produce an insoluble hydroxide. Will the percent yield of the iron (III) compound containing a complex ion be affected by the formation of the insoluble hydroxide
what is the energy of a photon emitted from an electron in a hydrogen atom when it jumps from the n 7 to the n 3
Luminol is so sensitive that it can detect blood that has been diluted 10,000 times. A basic solution of luminol is often sprayed onto surfaces that are suspected of containing minute amounts of blood.
Find the theoretical yield and the percent yield if the mass of aluminum is 0.509 and the mass of alum synthesized is 4.99 g
A 2.158g vitamin C tablet was analyzed for ascorbic acid content. 1.785g of the tablet was used to make 100mL of solution for titration. A 25.00mL sampled of the solution required 11.85mL of 0.0982 M NaOH for neutralization.
Nitrous oxide gas is used by some denatl practitioners as a anesthetic. Nitrous oxide can be produced in small quantities in the laboratory by cardful heating of ammonium nitrate. Write the unbalanced chemical equation for the reaction.
element symbols and chemical formulas.1.write chemical formulas for the following compounds.a. ethyl alcohol which
When an ion-selective electrode for X was immersed in 0.0490 M XCl, the measured potential was 0.0470 V. What is the concentration of X when the potential is 0.0620 V?
If after the neutralization, the remaining solution was boiled until only the solid sodium sulfate remained, how many grams of sodium sulfate would be present
A 14.8-g sample of white phosphorus was burned in an excess of oxygen. The product was dissolved in enough water to make 579 mL of solution. Calculate the pH of the solution at 25°C.
A 17.6 g sample of an alloy at 93.0°C is placed into 50.0 g of water at 22.0° C in an insulated coffee-cup calorimeter with a heat capacity of 9.2 J/K. If the final temperature of the is 31.1°C, what is the specific heat capacity of the alloy
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