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(-4.3x10^4 mol/kg)x?=?mol/g
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- Fill in the missing information in the following table.A solution labeled “0.25 M AICl3” would contain _________ le(s) of Al3+ and mole(s) of Cl- in each liter of e solution.1) Consider the following substances:Lead (II) Carbonate, PbCO3 KSP = 7.40 x10-14Magnesium Carbonate, MgCO3 KSP = 6.82 x10-6Strontium Carbonate, SrCO3 KSP=5.60 x 10-10If 100.0 grams of each were added to 1.00 L of water at 25°C, put them in increasing order ofconcentration of carbonate ions, CO32-.
- In the standardization of HCl using pure anhydrous sodium carbonate as the primarystandard for methyl orange as an indicator, 1.0 mL HCl was found to be equivalent to 0.05gof sodium carbonate (MW =106). The normality of HCl is:Ir Ali is currently taking Mucogel suspension at a daily dose of 10 ml after her three meals and bedtime. How much magnesium hydroxide will Mr Ali have taken after 5 days of compliant use of Mucogel? (Mucogel contains magnesium hydroxide 195 mg and dried aluminium hydroxide (220 mg/5 mlIntravenous fluid or electrolytes are usually reported in mEq/L. For example, a dialysate solution prepared for a patient coming in for dialysis may contain 130 mEq/L of Na+ and 5.0 mEq/L of Ca2+. What are these values in g/dL?
- Marble, a material used in buildings and statues, has the chemical composition CaCO₃. CaCO₃ reacts with acid (H₃O⁺), dissolving the solid through the reaction: CaCO₃(s) + 2H₃O⁺(aq) → Ca²⁺(aq) + CO₂(g) + 3 H₂O(l) In 1985, rain water in central Pennsylvania had an approximate H₃O⁺ concentration of 8.0 × 10⁻² mM. What volume of rain would be needed to dissolve a small statue made of 4.50 kg of marble?Mrs A is currently taking Mucogel suspension at a daily dose of 10 mL after her three meals andat bedtime. How much magnesium hydroxide will Mrs A have taken after 5 days of compliant useof Mucogel? (Mucogel contains magnesium hydroxide 195 mg and dried aluminium hydroxide220 mg/5 mL.)A sample of pure sodium oxalate weighing 0.1050 g is ignited [Na2C2O4 (s) --> Na2CO3 (s) + CO (g)] and the resulting product requires 15.00 mL of a solution of H2SO4 for complete neutralization. What is the normality of the acid? MM of Na2CO3 = 106.0 g/molMM of Na2C2O4 = 134.0 g/molMM of CO = 28.01 g/molMM of H2SO4 = 98.08 g/mol
- Mrs. A is currently taking Mucogel suspension at a dose of 10 mL after her 3 meals and at bedtime. How much magnesium hydroxide (in g) will Mrs. A have taken after 5 days of compliant use of Mucogel? (Mucogel contains magnesium hydroxide 195 mg and dried aluminum hydroxide 220 mg/5 mL)A commercial research organization is planning to develop a sensor to detect methyl parathion that may be injected into a water supply by terrorists. The LD50 for methyl parathion is reported to be as low as 6 mg ・ kg−1 for rats. They are assuming a safety factor of 1 × 105 and a volume of liquid ingested equal to a cup of coffee (about 250 mL) in the design of the instrument. What concentration (in mg ・ L−1) must their instrument be able to detect? Using Equation 6–10, the concentration you have calculated, the ingestion rate of 250 mL, an exposure frequency of one day, and exposure duration of one day, an adult malebody weight, and an averaging time of 1 day, estimate the hazard index. The RfD for methyl parathion is 2.5 × 10−4 mg ・ kg−1 ・ d−1 .5. Adult oyster shells are composed mainly of calcite, CaCO3. It’s dissolution in water can be described as: CaCO3 (s) ⇌ Ca 2+ + CO32- The surface seawater around Hong Kong has concentrations of [CO32-] = 1 x 10-5 mol/kg and [Ca2+] = 0.01 mol/kg. Will oyster shells dissolve in the seawater?