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Explain the following trends in lattice energy. (Select all that apply.) (a) NaCl > RbBr > CsBr CsBr is smaller than RbBr and NaCl. NaCl is smaller than RbBr and CsBr. The ions in CsBr and RbBr are +2 and ?2; whereas in NaCl they are +1 and ?1. The ions in CsBr and NaCl are +2 and ?2; whereas in RbBr they are +1 and ?1. The Cs cation is larger than the Rb cation. The Na cation is larger than the Cs cation. (b) BaO > KF The ions in KF are +2 and ?2; whereas in BaO they are +1 and ?1. Fluorine is less electronegative than oxygen. The atomic radii of Ba and O are smaller than those of K and F. The atomic mass of K and F are larger than those of Ba and O. The ions in BaO are +2 and ?2; whereas in KF they are +1 and ?1. (c) SrO > SrCl2 The oxide ion is bigger than the chloride ion. The oxide ion has a ?2 charge; whereas the chloride ion is ?1. The oxide ion is smaller than the chloride ion. The oxide ion is less electronegative than the chloride ion. The oxide ion has a ?1 charge; whereas the chloride ion is?
How much water must be added to 534. mL of 0.180 M HCl to produce a 0.135 M solution? (Assume that the volumes are additive.)
What is the difference between the fresh meat with added sodium nitrite and the meat with added sodium nitrite plus sodium erythorbate?
how many liters of fluoridated drinking water would a 70 kg person have to consume in one day to reach this toxic level? How many kg of sodium floride would be needed to treat a 7.49x10^6 -gal reservior?
A 44 sample of water absorbs 329 of heat If the water was initially at 21.7, what is its final temperature.
how many grams of sulfur are needed to react completely with 246 g of mercury to form HgS
A system absorbs 192 kj of heat and the surroundings do 120 kj of work on the system. what is the change in internal energy of the system
An 18.0-g sample of magnesium is completely burned in the presence of air to form magnesium oxide. What is the mass of the magnesium oxide obtained?
How many grams of Cu(OH)2 can be produced from the reaction of 0.500g Cu with 30.0 mL of 3.0M NaOH? what is the limiting reagent?
Some of the cyclohexane solvent vaporized during the temperature versus time measurement. Will this loss of cyclohexane result in its freezing point being recorded as too high, too low, or unaffected.
what is the chemical equation that describes both these reactions? Please give the chemical equations of what happens in this situation
A compound is constituted by mass of 22.6% phosphorus, the rest being chlorine. Given that a volume of 307 mL of the gas has a mass of 1.55 g at 25 °C and 90 kPa, find the molecular formula for this compound
Calculate the concentration of each ion present in a solution that result from mixing 50 mL of a .20 M NaCLO3 solution with 25 ml of a .20 M Na2SO4. ASsume that the volumes are additive.
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