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In a coffee-cup calorimeter, 1.30 g of NH4NO3 is mixed with 73.0 g of water at an initial temperature of 25.00°C. After dissolution of the salt, the final temperature of the calorimeter contents is 23.03°C. Assuming the solution has a heat capacity of 4.18 J/°C·g and assuming no heat loss to the calorimeter, calculate the enthalpy change for the dissolution of NH4NO3 in units of kJ/mol.
Check all that apply Water is important to life because: - it does not dissolve certain substances - it causes brownian motion - it is colorless and odorless
consider the electrolysis of molten barium chloride bacl2. a write the balanced half-reaction that occurs at the
What is the theoretical yield (in grams) of the precipitate when 22.2 g of iron(II) chloride reacts in solution with 10.91 g sodium hydroxide
A solution of ammonia and water contains 3.00×1025 water molecules and 5.10×1024 ammonia molecules. How many total hydrogen atoms are in this solution?
How much more extra of the insufficient reactant would be needed to completely react with the excess remaining of the other reactant. (N = 14, H = 1, Cl = 35.5)
assume that an astronaut's energy comes from burning glucose(c6h12o6). write 3 equations (including delta H values that represent the heats of formation for each C6H12O6, H20 and CO2.
Explanation of Ratios, In an unsymmetrical alkene, the boron atom adds predominantly to the least substituted carbon atom. For example, 2-methyl-2-butene gives the products shown below.
How many moles of sodium bromide can be produced from the reaction of 1.03 moles of sodium with 0.650 moles of bromine gas? 2 Na(s) + Br2(g) > 2 NaBr(s)
Draw a structure for a compound that meets the following description: A compound C3H5N with an IR absorption at 2215 cm-1 but none at 3300 cm-1
a reaction vessel contains 13.9g of CO and 13.9g of O2. How many grams of CO2 could be produced according to the following reaction? 2CO + O2 ---> 2CO2
What product or products would you expect to obtain by the addition of bromine to cis-cinnamic acid, assuming that it reacts by the same mechanism as the trans acid
Properties of subatomic particles - Fill in the missing relative masses and relative charges for each of the subatomic particles
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