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Calculate the empirical formula of vanillin? Vanillin, the dominant flavoring in vanilla, which contains C, H, and O and 1.05g of this substance, is completely combusted, 0.50g of H2O and 2.43g of
Explain how does the behavior of the light beam distinct from the behavior of a bullet fired in the similar direction from the top of the freight car?
Copper (II) bromide reacts with potassium phosphate to produce Potassium bromide and copper (II) phosphate. Find out the maximum number of moles of copper (II) phosphate that could be formed from 1
Let, consider a homemade television projection system which employs a large thing positive lens to cast the image of the TV screen to a wall.
An organic compound was found to contain 10.34% hydrogen, 27.59% oxygen and 62.07% carbon. Calculate its empirical formula and suggest a few possible molecular formulas. Name each of them.
Let, consider an isotropic point light source "S" situated at some height "h" directly over a point "M" on a horizontal plane. When point "P" is on the plane at a distance "r" from "M", verify that
A container of cylindrical shape 1.2 tall contains mercury to a certain depth, d. The rest of the cylinder is filled with the water. When the pressure at the bottom of the cylinder is two atmospher
A compound was found to have a molar mass of 245.8g and the following composition: 2.44% H, 13.02%O, 19.53% C and 65.01% Br. State the empirical formula and its molecular formula.
In an experiment, aluminum of 200 g having a specific heat of 900 J/kg•K at 100°C is mixed with 44.0 g of water of 4186 J/kg•K at 20°C, having the mixture thermally isolated. (i)
A compound was found to have in 11.1% H, 35.6% S and 53.3%C. Calculate its empirical formula and suggest its molecular formula, knowing that it smells like rotten eggs when it becomes moist. Discus
Determine the values of the quantum numbers n, l, ml, s, and ms for each of the valence electrons of a nitrogen atom in the ground state?
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 hour
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?
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?
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 mat
Estimate the flame temperature produced by the reaction when an oxyacetylene flame is often used in the welding of metals.
(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?
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?
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.
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.
A pole of 2.976 cm diameter projects 4.028 cm from the wall having a 1656 kg suspended object at its end .Take the shear modulus of the aluminum to be 3.0 x10^10 N/m^2. Avoiding the rod's weight, de
A block of 73 Kg rests on the frictionless table. This is joined to a hanging block of 220 kg by a frictionless pulley. Determine how many m/s/s do the two blocks accelerate?
The hydrocarbon mixtures are used as fuels. Calculate the mass of CO2(g) which is formed by the combustion of 191.1g of a mixture that is 54.9% CH4 and 45.1%C3H8 by mass?
Determine what would happen to the focal length of the concave mirror when its radius of curvature were raised? When R was made large adequate, what would occur to the focal length of the mirror?
The light of wavelength of 625 nm is incident perpendicularly on the soap film (with n = 1.30) hanged in air. Determine the smallest two thicknesses of the film for which the reflections from the fi