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Rapid Burning of Sugar Versus Its Stability Against OxygenWhy is sugar stable under standard conditions. In contrast to the high stability of sugar in daily use it burns rapidly when ignited without any 'booster' like sulphur or alkali nitrates.
A student has prepared a 0.309 M solution of Barium hydroxide and a 0.443M solution of hydrochloric acid for you. Determine the volume of the hydrochloric acid solution will be needed to exactly neutralize 10.0 mL of the Barium chloride solution.
Calculating the equilibrium constant (Keq) for the given reactions - Determine the Keq for the following reactions
Na3PO4+CaCl2 ---> Ca3(PO4)2+NaCl if 0.996 g of Na3PO4 are provided, how many grams of Ca3(PO4)2 should be formed?
Gas cylinder A has a volume of 48.2 L and contains N2(g) at 8.35 atm at 25 ºC. Gas cylinder B, of unknown volume, contains He(g) at 9.50 atm at 25 ºC
given that, for H2C2O4(aq), Ka1 = 6.5 x 10-2 and Ka2 = 6.1 x 10-5. Don't forget that Kw = 1 x 10-14.
A small organic molecule required by an enzyme in order for the enzyme to be a functional catalyst is known as a vitamin. Lipids that are solids at room temperature tend to have more double bonds than liquids at room temperature
An electron in an excited state of a hydrogen atom emits two photons in succession, the first at 1817 nm and the second at 97.20 nm, to return to the ground state (n=1).
Buffering capacity You want a solution that will buffer the addition of either 10 micromoles of acid or 10 micromoles of base. Total buffer concentration is equal to the concentration of the acid plus the concentration of salt of the acid
Draw the crystal-field energy level diagram for the 3d obitals and show the placement of d electrons assuming this is a weak-field complex ion.
determine what mass of AgCl silver chloride can be formed from 1.03L of a 0.132M solution of AgNO 3 silver nitrate
You have 47.2 mL of a solution of copper(II) chloride (CuCl2?). You need to determine the concentration of Cu2+ in the solution gravimetrically.
Determine how many kgs of Ca are there in a 205-pound man If 1.4 percent of the mass of a human body is calcium(Ca)?
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