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Construct the lewis structure model for the ionic compound potassium chloride using the following steps.1) the number of valence electrons in a potassium ion is ____; the number in a chloride ion is _____.2)Write the atomic cores for potassium and chloride ions. ______ & _______.3)Write the Lewis symbols for each ion. ____ & _____.4)Write the Lewis structure for the ionic compound potassium chloride in the box [].
A patient needs to take 625 of ibuprofen twice daily. The pills in the bottle are each 250. . How many pills does the patient need to take each time she wants the 625 dosage? Assume that these pills are scored and can be cut in half if necessary.
Complete and balance an equation describing each of the above reactions. (Type your answer using the format CO2 for CO2, (NH4)2CO3 for (NH4)2CO3, [NH4]+ for NH4+, and [Ni(CN)4]2- for Ni(CN)42-. Use the lowest possible coefficients.)
A tunable dye laser emits pulses of light at 609.0 nm, each having a total energy of 9.8E-6 J. Calculate the number of photons in each pulse.
The surface area of the nail is 8.59 cm. The density of the zinc is 7.13 g/cm3 how many zinc atoms are used in the coating?
What mass would carbon disulfide gas (CS2) have if 125 cm3 of the gas at 400°C exerts a pressure of 736 torr?
If you titrate a second 100.0mL portion of the Ag/Cu solution and add Cl- to precipitate out Ag+ leaving only Cu2+ in the solution, it requires 35.00mL of the same EDTA titrant to reach the endpoint. Calculate of both Ag and Cu in the original sol..
What is the solubility of MnS, in grams per liter, in a buffer solution that is 0.115M HC2H3O2
Cycloprpane decomposes in a first-order reaction at 500 C If the cyclopropane concentration is .670 M at the start of the reaction and is .367 M after 900 s, what is the rate constant for the reaction
What if any experimental evidence do you have that the equilibrium is affected by the addition of concentrated HCL? Explain Are your observation and explanation in A consistent with Le Chatelier's Principle? Explain
nitric acid will give a better yield than acetic acid because with acetic acid some material is converted into benzaldehyde by cleavage of the bond between two oxidized carbon atoms that is activated by both phenyl groups. Any help would be apprec..
Find the expected freezing point of a water solution that contains 268 g of aluminum nitrate, Al(NO3)3, in 8.50 kg of water.
Twenty-five mL of 0.150 M hydrofluoric acid, HF, is titrated with 0.100 M potassium hydroxide. What is the pH of the acid initially (before any base is added)?
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