Estimate the flame temperature produced by the reaction
Estimate the flame temperature produced by the reaction when an oxyacetylene flame is often used in the welding of metals.
2C2H2(g) + 5O2(g) ---->4CO2(g) + 2 H2O (g)
Suppose the heat generated from this reaction is all used to heat the products.
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Calculate the volume of concentrated sulphuric acid needed to prepare 1.90 L of 0.470 MH2SO4 solution when the commercially available concentrated sulfuric acid is 18.0 MH2SO4.
Can in shape of the right circular cylinder is needed to have the volume of 500 cubic centimers. For what value of r is cost C minimum? If you can set up equation.
The same compounds A and B have different Rf values in a second solvent system: Rf=0.78 for B and Rf=0.81 for A. Which solvent system provides the greater separation?
(i) What types of PE exist in the system? (ii) Determine the value of x if the block comes to rest momentarily while beginning from rest?
Determine the natural logarithm of the pressure in Pascal’s that should be applied to a cube of material of edge 49.6 cm to decrease the edge length by 0.076% when the bulk modulus of the material is 1.932 x 10^11 N/m^2?
Determine the volume of 1.44 M calcium chloride must be diluted with water to prepare the 408.0 mL of a 2.85×10-2 M chloride ion solution?
The interior surface temperature is 19.0 o C. and the exterior surface temperature is -10 o C. Determine the temperature at the plane where the wood meets up the Styrofoam?
This medicine is effective until amount in bloodstream drops 1.2 mg. The doctor prescribes the dose of 85 mg. State the function A which models amount of medicine remaining in bloodstream after t hours.
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