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calculate the percentage of empty space in 1 mole of water at 25 c. the volume of a molecule of water can be taken as the sum of the volumes of the two hydrogen atoms and the oxygen atom. use the single bond covalent radii of 37 pm for hydrogen and 66 pm for oxygen.
A solution is made by combining 15.0mL of 16.5M acetic acid with 5.52g of sodium acetate and diluting to a volume of 1.50L
When titrating 0.15 M HCl with a calcium hydroxide solution of unknown concentration, 35 mL of acid are required to neutralize 25 mL of the base.
How many grams of FeSO4 are there in 206 grams of an aqueous solution that is 14.0 % by weight FeSO4.
The Chemistry of Nicotine, Nicotine, a component of tobacco, is composed of C, H, and N. A 5.250-mg sample of nicotine was combusted producing 14.242 mg of CO2 and 4.083 mg of H2O
Suppose you measured the product of PV of 1 mol of a dilute gas and found that PV= 27.54 L atm at 0.00 C and 37.32 L atm at 100 C.
A solution is prepared by dissolving 0.16 mol of acetic acid and 0.16 mol of ammonium chloride in enough water to make 1.0 { L} of solution. Find the concentration of ammonia in the solution.
the thermite reaction is performed using 8.6g Fe2O3 and 1.8g powdered Al metal. which reactant is in excess and by how much?
Calculate the molarity of a solution of glycerol made by dissolving 59.000 mL glycerol at 15 degrees celcius in enough water to make 380.00 mL of solution
The rainwater is mainly composed of NaCl 1 mM and its pH is 4.6. Without using a computer, determine the concentration of Ca2+in runoff water.
a 4.78g sample of aluminum completely reacts with oxygen to form 6.67g of aluminum oxide. what is the mass percent
The reusable booster rocket of the U.S. space shuttle employs a mixture of aluminum and ammonium perchlorate for feul. the chemical reaction that occurs is
Three compounds are to be separated using HPLC. Compound A and Compound B have the same polarity but are more polar that Compound C. Compound A and Compound C have the same molecular weight (5000), and Compound B has a molecular weight of 26,000.
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