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how much heat does 23.0 g ice cube absorb as its temperature increases from "-17.40" C to 0.00? Assume the specific heat of ice is 2.03 J/g C is this endothermic or exothermic
Convert the following concentrations of aqueous solutions.
1.) 35.0% HCI(aq) m FW (HCI)=34.46 g/mol
2.) xKF =0.102 m MW(H2O)=18.02 g/mol
3.) 2.50 m KNO3(aq) xKNO3 MW(H2O)=18.02 g/mol
4.) 1.17 M H2 SOA(aq) N H2SO4 used as an acid to form Na2SO4
5.) 1.73% Pb(aq) ppm
6.) 956 ppm Cu(aq) %(w/w)
7.) 1200 pbb Ca(aq) ppm
8.) 7.97 ppm Mg(aq) ppb
How many grams of potassium chlorite can be dissolved in 100g of water at 50 degrees
How many moles of water are made from 0.25 moles of glucose
Indicate the type of transition responsible for the intense colour of the Cr(CO)4(L) and Mo(CO)4(L) complexes and justify your answer.
how many formula units of iron (III) oxide can be produced from the reaction of 108 g of iron with 72.1 L of oxygen gas at STP?
Phosphorous pentachloride decomposes to phosphorus trichloride according to this equation:
PCl5(l) <===> PCl(g) + Cl2(g). At equilibrium, [PC5] = 1.00 M and [Cl2] = 3.16 x 10^-2 M. Show your work.
A. Write the expression for determining the concentration of PCl3.
B. What is the equilibrium concentration of PCl3? Use: Keq = 1.00 x 10^-3.
Calculate the standard heat of vaporization, △Hvap, for tin(IV) chloride, SnCl4.
△H°f = -511.3 kJ/mol for SnCl4(l) and -471.5 kJ/mol for SnCl4(g). Show your work.
Calculate the △G° at 298 K for the following reaction. Show your work.
Fe2O3 (s) + 13CO (g) = 2Fe(CO)5(g) + 3CO2(g)
-824.2 -110.5 -733.8 -393.5
△H° (kJ/mol)
87.4 197.6 445.2 213.6
△S° (J/mol x K)
Titanium is a transition metal used in many alloys because it is extremely strong and lightweight. Titanium tetrachloride is extracted from titanium oxide using chlorine and coke. What mass of C is needed to react with 1.25 mol of Tio2?
