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Question- You place 0.0500 g of Mg chips in a coffee-cup calorimeter. You add 100.0 mL of 1.00 M HCl at a temperature of 22.21 degrees C. After the reaction is complete, the water temperature goes up to 24.46 degrees C. Assuming the specific heat capacity of the solution is 4.20 J/g-C and the density of the solution is 1.00 g/mL, Calculate enthalpy per mole of Mg for the reaction. MM of Mg = 24.305 g/mol
Illustrate structures to prove your interpretation.
How many grams of oxygen are needed to react with 25.0g of MG. How many grams of Mgo will result
the reactant concentration in a first-order reaction was 6.80times10-2 m after 10.0 s and 4.40times10-3 m after 65.0s.
For a particular liquid, raising its temperature from 330 K to 353 K causes its vapor pressure to double. What is the enthalpy of vaporization of this liquid? (R = 8.31 J/(K· mol))
A system comprised of 2.900×10^1 g of Ne(g) cools from 170.0°C to 45.0°C at a constant pressure of 5.5 atm. The molar heat capacity at constant pressure for Ne(g) is 20.80 J K?1 mol?1. calculate q,w,delta E, ANDdelta H
calculate the energy in the form of heat in kj required to change 75.0 g of liquid water at 27.0 degc to ice at -20.0
Compute the boiling point of this solution if Kf and Kb for H 2 O are given as 1.86°C/m and 0.512 °C/m , respectively.
Explain the relationships among the change in the degree of order, the change in entropy, and the change in free energy that occur during chemical reaction.
A 0.160-mole quantity of NiCl2 is added to a liter of 1.20 M NH3 solution. What is the concentration of Ni2 ions at equilibrium. Assume the formation constant* of Ni(NH3)62 is 5.5 × 108.
You have proven sulfanilamide is capable of forming a stable and selective crystal lattice. Draw additional molecules of sulfanilamide and hypothesize the intermolecular interactions that are most important for providing a stable and selective cry..
What is the pH at the equivalence point when when 40.0 mL of 0.183 mol/L HC7H5O2(aq) is titrated with 0.131 mol/L NaOH(aq)? Assume the temperature is 25oC
Do you think those SNPs are going to prove to be really significant, or just the result of filling-in some blank-spots in the DNA
A 270- flask contains pure helium at a pressure of 761 . A second flask with a volume of 455 contains pure argon at a pressure of 730 . If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial pressure of ..
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