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Question- An ionic compound forms when calcium (Z = 20) reacts with iodine (Z = 53). If a sample of the compound contains 1.3x10^19 calcium ions, how many iodide ions does it contain?
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Problem- In 2011, researchers showed that hypochlorous acid (HClO) generated by white blood cells kills bacteria. Calculate (Ka)=2.9X10^-8 the percent dissociation of :( A). 0.40 M HClO, (B) 0.035 M HClO
Suppose the mass spectrum of a hypothetical monatomic element X contains a signal at mass number 13 and another of identical height at mass number 15.
Standard state is the physical state in which a substance is stable at 1 atm of pressure and a specified temperature
The most important commercial process for generating hydrogen gas is the water-gas shift reaction: CH4(g) + H2O(g) ? CO(g) + 3H2(g) a)Use tabulated thermodynamic data to find ?G° for this reaction at the standard temperature of 25°C.
aluminum and 351 mL of 0.621 M solution of copper (II) chloride, how much of each substance will be present at the end of the reaction. If 10.6 g of the solid is formed, what is the % yield of the reaction?
why does hydrochloric acid and acetic acid have the same equivalence, while hydrochloric acid and sulfuric acid
12.00 g of an unknown nonelectrolyte in enough water to make 2.00 L of solution. The osmotic pressure of this solution is 0.750 atm at 25.0°C. What is the molecular weight of the unknown solute (R = 0.08206 L•atm/K•mol)
Gallium crystallizes in a primitive cubic unit cell. The length of an edge of this cube is 362 pm . What is the radius of a gallium atom
A solution containing 0.2 g/mL of a pure R enantiomer in a 1 dm polarimeter rotates plane polarized light by +3?. What is the specific rotation of the R isomer. What will be the specific rotation of its S isomer.
How many milliliters of a 305 mL solution of 1.5 M AlCl3 must be used to make 75 mL of a solution that has a concentration of 0.41 M Cl
Why was cold deionized water added to the reaction mixture rather than hot water, and what is the purpose of acetic acid?
Three common hydrocarbons that contain four carbons are listed here, along with their standard enthalpies of formation
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