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The complete combustion of ethanol to form water and carbon dioxide at constant pressure releases 1790 kJ of heat per mole of C2H5OH.
C2H5OH(l)+3O2(g)-->2CO2(g)+3H2O(g)
Q. Calculate enthalpy of reaction above.
Express your answer to four significant figures and include the appropriate units.
If 150 g of carbon reacts with 250 g Cl2 with an 85% yield, what is the mass of CCl4 produced
What does the angular momentum quantum number determine. Check all that apply. A.) the overall size of an orbital B.) the energy of the electron on the outer shell
Consider the reaction, 4 NH3 + 5 O2 => 4 NO + 6 H2O, How many molecules of NO will be made with 89.5 moles of H2O
A chemistry handbook lists the solubility of sodium Iodide as 184 grams per 100mL of water at 25 degrees celsius. How many moles of NaI can be dissolved in 100mL of water at 25 degrees celsius?
Consider a rigid, adiabatic, impermeable cylinder (i.e., a closed isolated system) that consists of two chambers (i.e., simple systems) that are separated by a wall that is permeable
An aqueous solution contains 5.9% NaCl by mass, calculate the mole fraction of the solution. The molality is 1.1m but I cant figure out the mole fraction.
Based on the data gathered in Millikan's oil-drop experiments, the concept of atomic structure was modified. Which of the following aspects of the structure of the atom was validated by these experiments
Blood contains several substances that minimize changes in its acidity by reacting with either an acid or a base. One of these is the hydrogen phosphate ion, HPO42-.
Compare the pH of an H2CO3 buffer (the first buffer) that contains 0.10 M H2CO3 and 0.10 M NaHCO3 with another H2CO3 buffer (the second buffer) that contains 0.15 M H2CO3 and 0.050. M NaCO3 Carbonic acid has a Ka of 4.3X 10^-7
The compound has a molecular mass of 70. D) The compound contains a cyano or alkyne group. E) The compound contains a CO group
Like sulfuric Acid, a certain diprotic acid, H2A, is a strong acid in its first deprotonation and a weak acid in its second deprotonation. A solution that is 0.020 M H2A (aq) has a pH of 1.66. What is the value of Ka2 for this acid
What is the molarity of an aqueous solution containing 75.3 g of glucose (C6H12O6, mol wt = 180 g/mole) in 35.5 mL of solution
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