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If 100mL of 0.7M HCl is mixed with 900mL of water, what is the molarity of the HCl now? Please show the steps used to reach the answer.
A solution has 0.500kg H20 and 14.3g NaCl. What is the mole fraction of H20? The question also says. The number of moles of sodium ions and chloride ions must be accounted for separately in calculating the total number of moles in the solution
Write a balanced net ionic equation for the neutralization reaction and Tartaric acid,( C4H6O6) , has two acidic hydrogens.
For a particular reaction, ?H = 139.99 kJ and ?S = 298.7 J/K. Calculate ?G for this reaction at 298 K. Is this reaction spontaneous or unspontaneous?
The Apparatus shown consists of three bulbs connected by stopcocks. What is the pressure inside the system when the stopcocks are opened?
why is the internal-standard method often used in plasma emission
Pure HClO4 is molecular. In water it is a strong acid. Write an equation for its ionization in water. Use minimal integer numbers to balance the reaction. Include physical states in your answer, e.g., start with HClO4(l).
A 1 g sample of C8H16O is burned completely in excess oxygen to yield CO2(g) and H2O(l) at 25 C, releasing 39.28 kJ of energy. What is the enthalpy of formation of C8H16O?
A solution of H2SO4(aq) with a molal concentration of 3.22 m has a density of 1.183 g/mL. What is the molar concentration of this solution?
The Nernst equation applies to both cell reactions and half-reactions. For the conditions specified, calculate the potential for the following half-reactions at 25 C 2Cr3+
What salt is formed in the reaction between 0.13 mol H3PO 4 and 0.26 mol KOH? 2.51 moles of a gas occupies 50.88 liters, and its density is 1.43 g/L at a particular temperature and pressure. Calculate the molar mass of the gas.
The solubility of barium carbonate,BaCO3, is .0100 g/L . Its molar mass is 197.6 . What is the Ksp of barium carbonate?
Indicate the direction of polarity of each of the following covalent bonds by dragging the appropriate delta notation to each end of the bond.
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