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1. Who does the first ionizaiton energy of the alkali metal in a given period compare with the first ionization energy of the halogen in the same period?
2. What is the result in terms of how these elements tend to react with each other?
A 17.6-g sample of an alloy at 93.0°C is placed into 50.0 g of water at 22.0°C in an insulated coffee-cup calorimeter with a heat capacity of 9.2 J/K. If the final temperature of the system is 31.1°C, what is the specific heat capacity of the allo..
what is the concentration ratio of the free (and potentially toxic) Pb^2+ (aq) in the blood to the much less toxic Pb^2+ -EDTA complex
A solution of ammonia and water contains 2.70×1025 water molecules and 8.50×1024 ammonia molecules. How many total hydrogen atoms are in this solution. Enter your answer numerically.
What wold you prodict for the relative reactivity of 4-trifluoromehylbenzaldehyde in this aldol condensation reaction. Explain. (Compare to benzaldehyde, 4-methylbenzaldehyde, 4-methoxybenzaldehyde, 4-chlorobenzaldehyde, and 2-nitrobenzaldehyde.
the density of silver is 10.48 g/cm3 at room temperature, what is the edge length of a unit cell of crystalline silver? Report your answer in picometers
What are the 8 balanced molecular equations for all of the chemical reactions involved in the copper cycle experiment
Does a precipitate form? Show all calculations. Calculate the concentration of each ion at equilibrium.
You take 306.5 g of a solid at 30.0 C and let it melt in 400. g of water. The water temperature decreases from 85.1 C to 30.0 C. Calculate the heat of fusion of this solid.
Homes in rural areas where natural gas service is not available often rely on propane to fuel kitchen ranges. the propane is stored as liquid and the gas to be burned is produced as the liquid evaporates.
Transesterification of a certain triglyceride produced one molecule of methyl oleate and two molecules of methyl linoleate. Draw the original triglyceride.
what is the number of valence electrons for nh4+ and what is the lewis structure for that molecule. and how many remaining electrons are there and how do you find the formal charge.
Find the pH during the titration of 20.00 mL of .1000 M butanoic acid CH3CH2CH2COOH (kA = 1.54E-5), with .1000 M NaOh solution after the following additions of titrant. a. 20.40 mL b. 26.00 mL
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