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A total of 2.00 mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 189 g of solution. The reaction caused the temperature of the solution to rise from 21.0 Celcius to 24.7 Celcius. What is the enthalpy of this reaction (in kJ/mol)? Assume that no heat is lost to the surroundings or to the coffee cup itself and that the specific heat of the solution is the same as that of pure water
Many metals are not found in nature in their elemental form, but in minerals which are a combination of elements. The metal is extracted by various means from these minerals.
What is the Total Ionic Equation for:2Al + 2KOH + 6H2O = 2KAl(OH)4 +3H2
After treating an antacid with 5.00 ml of .1065 M NaOH, the untreated acid was diluted to exactly 250 mL with distilled water in a volumetric flask. 25.00 mL of that diluted acid required 17.03 mL of the same NaOH solution to neutralize it. Calcul..
what is the main purpose of scratching beakers wall during the synthesis of the
The temperature scale is called °M and has a value of 0°M at the freezing point and 100°M at the boiling point of ethylene glycol. What would the temperature be in degrees centigrade, if it was 20.916°M
At a temperature of 500 degrees celsius the equilibrium constant ,Kc, for the following nitrogen fixation reaction 3H2(g)+N2(g)----->2NH3 is 6.0x 10^-2 . If 0.250 mol/L of H2 and 0.050 mol/L NH3 are present at equilibrium, what is the concentratio..
It required 22.7mL of HCl to reach the orange-red end point. Calculate the molar solubility and Ksp of calcium hydroxide.
A copper wire (density = 8.96 g/cm3) has a diameter of 0.27 mm. If a sample of this copper wire has a mass of 35 g, how long is the wire?
At a local convenience store, you purchase a cup of coffee, but, at 98.4 degrees celsius, it is too hot to drink. You add 45.9 g of ice that is -2.2 degree celsius to 248 mL of the coffee. What is the final temperature of the coffee
a hydrated compound has an analysis of 18.29% Ca 32.37% CI and 49.34% water. what is the empirical formula?
A student found that a brand B tablet would neutralize 0.011 moles of HCl per tablet. Which is the better buy, brand A or brand B? Why?
A mixture of 82.49 g of aluminum ( Picture = 26.98 g/mol) and 117.65 g of oxygen ( Picture = 32.00 g/mol) is allowed to react. What mass of aluminum oxide ( Picture = 101.96 g/mol) can be formed?
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