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Over the years, the thermite reaction has been used for welding railroad rails, in incendiary bombs, and to ignite solid-fuel rocket motors. The reaction is: Fe2O3 + Al → Fe + Al2O3
If there are 798.2 g of Fe2O3 and 797.5 g of Al
a. Which is the limiting reactant? Which is the excess?
b. How much iron is produced in the reaction?
Can you give the steps too
ammonium ions can be analyzed by precipitating with h2ptcl6 as (nh4)2ptcl6 and then igniting the precipitate to platinum metal, which is weighed. the ignition reaction is: (nh4)2ptcl6 ----------> pt(s) + 2 nh4cl(g) + 2 cl2(g) calculate the percent ammonia in a 2.50g sample that yields 0.175g pt by this method.
Answer the following worded problems below. Show your solutions.
A 17.3L of gas enclosed in a container having a standard pressure which is 760mmHg. If the pressure is lowered to 240mmHg, what will be the volume of the gas?
A 63L of HCl is heat-cured at 102.6 degrees Celsius, by adding another 63.44L of the same substance, the temperature lowers. What will be the temperature after adding the additional volume of HCl?
A series of changes in pressure in an oxygen tank, starting at 12kPa to 42kPa and to 56kPa. What will be the total pressure if the last state of oxygen inside the tank is thrice the initial pressure?
6L of water reached its boiling point at 46kPa. If the pressure increases at 99kPa and the volume lowers at 2.8L, what is the change in temperature?
A compound consists of carbon and hydrogen. The
molar mass of this compound is 44.1 g/mol. The
percent by mass of carbon is 81.71%. Determine the
empirical and molecular formulas of the compound
1. What happened to the blade that was placed diagonally? Explain why that happened.
2. What happened to the blade that was placed horizontally using a fork?
3. In what way did the intermolecular forces affect the outcome of your activity?
Compare 1.0 mol/L sodium hydroxide with 1.0 mol/L ammonia (written as ammonium hydroxide) by recreating similar diagrams of dissociation and concentration as those provided to you for the acid comparison. Assume ammonia dissociates only 1%. What would you expect to see if you tested the conductivity and pH of each? Why is there a difference in reactivity if there is 1 mole of acid in a given litre?
. A furnace uses a coal the ultimate analysis shows 57.22 % C, 5.64 % H, 1.41 % N, 5.06 % S, and 14.67 % ash. If the sulfur in the ash is negligible and the excess air is 80 %, compute the Orsat analysis of the combustion gases.
2.) If dry hydrogen gas at atmospheric pressure is burnt completely in a furnace with 32 % excess air, calculate the Orsat analysis of the flue gas from this furnace.
Hikers climbing Mount Everest discovered it took much longer to cook a boiled egg than it does at sea level, because the boiling water is not as hot. What will be the temperature of boiling water (in °C) at an atmospheric pressure of 455 torr? (The ∆Hvap of water is 40.7 kJ/mol).
what are properties of elements compounds and mixtures used for
intermolecular force for kerosene and water
