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At a local convenience store, you purchase a cup of coffee, but ,at 98.40C, it is too hot to drink you add 23.0 g of ice that is -2.20 C to 248 ml of the coffee. What is the final temperature of the coffee?
What mass of potassium can be produced by the reaction of 215 g Na with 296 g of KCl?
The value of delta E for a system that performs 213 kJ of work on its surroundings and loses 79 kJ of heat is kJ
Calculate the value of E°cell for a voltaic cell described in each of the following. Enter your answer with 3 significant digits. Enter scientific notation as 1.23E4. (a) Br2(l) is reduced to Br
If the desired dose is achieved in 5 minutes at the beginning of the calendar year, how much irradiation time is needed to keep the dose the same three months later
At atmospheric sample is composed of nitrogen, oxygen, argon, water vapor, and trace other gases. If the partial pressure of nitrogen is 577 mmHg, oxygen is 148 mmHg, water vapor is 20 mmHg and argon is 7 mmHg, what is the observed barometric pres..
the titration of acetic acid with sodium hydroxide can be expressed as the combination of two reactions: the acetic acid reacting with water, and the sodium hydroxide reacting with hydronium ion.
Epsom salt is a hydrate with a formula MgsO4.xH2O, where x indicates the number of moles of H2O per mole of MgSO4. After a 1.687 g sample of the hydrate is heated, 0.824 of MgSO4 remains. How many molecule of water are present per formula unit of ..
Given a solution that is prepared by combining 1.254 g of MnSO4 with 1.45Kg of H20, provide the ppm and % composition by weight of MnSO4.
Determined an aliquot of 0.03526M potassium permanganate solution required to make 100 mL of a 10-3 mol/L solution.
Give the chemical reactions that show why solutions of Al(NO3)3, Zn(NO3)2, and NH4NO3 have the pH values that you found.
What is the change in the chemical potential of the liquid. as a function of change in temperature assuming the entropy near the boiling point is constant
Calculate the volume of a solution NaOH c=0.2 mol/l necessary to neutralize v=200 ml of solution HCl c=0.1 mol/l.
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