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The production of ammonia (NH3) under standard conditions at 25°C is represented by the following thermochemical equation.
N2(g) + 3 H2(g) → 2 NH3(g); ΔH = -91.8 kJ
How much heat is released when 1.413 ? 104 grams of ammonia is produced?
Write a net ionic equation for the precipitation reaction, if any, that occurs when aqueous solutions of the following ionic compounds are mixed. Cu(Ch3COO)2 and Na3PO4.
Given a stock solution of a food dye having a concentration of 1.0 x 10-5 and an absorbance of 0.700. If a new solution is made by diluting exactly 10.0 mL of the solution with exactly 20.5 mL of distilled water, what should the absorbance of the ..
calculate the heat absorbed by 15.0 g of water to raise its temperature from 20.0oc to 50.0oc at constant pressure. the
At 70K, CCL4 decomposes to Carbon and Chlorine. The Kp for the decomposition is 0.76. Find the starting pressure of CCl4 at this temperature that will produce a total pressure of 1.1 atm at equilibrium.
Question- A 3.75-g sample of limestone (CaCO3) contains 1.80 g of oxygen and 0.450 g of carbon. What is the percent O and the percent C in limestone
a 0.21 m3 drum contains 100 l of a mixture of several degreasing solvents in water. the concentration of
Problem 1- A sample initially contains 3.2 moles of a radioactive isotope. How much of the sample remains after three half-lives. 2- Plutonium-236 is an alpha emitter with a half-life of 2.86 years. How long will it take for the 1.35mg sample of P..
What structural similarities exist between indigo, tyrian purple, alizarin, picric acid, and the main component of mauveine? The compounds beta-carotene and crocetin are not listed as part of this group
the mass of the flask is measured when the outside of the flask is wet. outside of the flask is dried before the mass
NaHCO3 + HCl I have provided the products for you here. Can you please try to determine the reactants and then balance the full equation.
A particular element M has a heat capacity of 0.36 JgK and it forms an oxide that contains 2.9 grams of M per gram of oxygen What is the molar mass of the metal
A particular gaseous hydrocarbon that is 82.7% C and 17.3 % H by mass has a density of 2.36 g/L at 21 degress C and 749mmHg. What is the molecular formula of this hydrocarbon
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