Determine the numbers of milligrams of calcium carbonate
To neutralize the stomach acid a Rolaids tablet contains the calcium carbonate. If 44.55 mL of 0.448 M hydrochloric acid is needed to neutralize a single tablet, determine the numbers of milligrams of calcium carbonate are in a Rolaids tablet?
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Find out the required angular speed rev/min of the ultra-centrifuge for the radial acceleration of a point 2.50cm from the axis to equal 400000g (i.e., 400000 times the acceleration due to the gravity)
A 10.0 mL sample of household ammonia solution needed the 38.50 mL of 0.311 M HCl to get the neutralization. Determine the molar concentration of the ammonia solution.
Given triangle ABC with measure of angle A = 120o, length of BC = 10, and length of AC = 20. Find how many solutions are there for measure of angle B?
Kucharel polymer is prepared by heating the dimethylester that is derived from the cyclohexane-1, 4-dicarboxylic acid with the ehyleneglycol. Find out the repeating unit in Kucharel? Also mention the structures of monomers that are used to prepare
Research shows that it takes 1656 kJ/mol to break all the bounds in methane ( CH4) and 4006 KJ/mol to break all the bonds in propane(C3H8). Determine the average bound enthalpy of c-c bond based on this research.
While riding on the multispeed bicycle, the rider can choose the radius of the rear sprocket which is fixed to the rear axle. The front sprocket of a bicycle consists of radius 11.5 cm.
For the reaction A ----> B + C, the rate law is rate =k[A]. If it takes 80.0 seconds for 70.0% of a 10.0 gram sample of A to be transformed into the products, Determine the value of the rate constant?
Find curve 9x^2+4y^2=36 as the parabola, ellipse, or hyperbola. Put te curve into proper form and then draw the curve on th axes. Write foci, vertices, directrix, asymptotes or whatever is needed.
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