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When aluminum crystalizes, it forms face-centered cubic cells. The atomic radius of an Al atom is 143. Caluculate the density of metallic aluminum.
Phenolphthalein is one of the most common indicators. What are its colors in acidic and in basic solutions?
Which of the following terms define(s) an acid according to the Bronsted-Lowry theory?
milk of magnesia is an over the counter pharmaceutical preparation used as a laxative and for heartburn. it can be
One a cold day a person takes a breath of 450 ml of air at a pressure of 745 mm Hg and room temperature of 21oC. What is the volume of this air in the lungs at 37oC and 758 mm Hg?
determine the amount of heat required to convert 2.3 mol of ice at -13.1 degrees celcius to liquid water at 21.6 degrees celcius.
A compound with empirical formula C 2 H 2 N dissolved its 0.0800 gram in 10.00 g of C 6 H 6 , freezing point of resulting solution= 4.99 degree celsius
gaseous carbon dioxide and liquid water react in the presence of chlorophyll to produce aqueous glucose (c6h12o6 ) and oxygen gas.
A 0.2527-g sample of a mixture of Mg(OH)2 and Al(OH)3 was treated with 50.00 mL of 0.225 mol L 1 HCl(aq). The resulting solution required 13.73 mL of 0.176 mol L 1 NaOH(aq) to neutralize the excess, unreacted HCl.
Of the substances below, the highest fuel value is obtained from- charcoal bituminous coal natural gas hydrogen wood
Calculate the pH of the solution that results from adding 28.0ml of 0.100M NaOH to 50.00 mL of a 0.0500 M solution of hydrochloric acid
What is the theoretical amount of oxygen required for the fuel mixture? What amount of air is added to the fuel mixture?
polar molecules are responsible for the absorption of mircowave energy by food items. draw the louis structure for each
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