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A metal stand specifies a maximum load of 450 lb. Will it support an aquarium that weighs 59.5 lb and is filled with 37.9 L of seawater (d = 1.03 g/mL)?
How many milligrams of Ca2+ are present in 12.0mL of blood if 21.64mL of 9.44×10-4M KMnO4 solution is needed for the titration?
You have 246 mL chlorine trifluoride gas at 686 mmHg and 27°C. What is the mass (in g) of the sample?
how many millilitres of 1.09 M HCl are required to react with a solution formed by dissolving 0.775 grams of sodium carbonate?
How many grams of NaCl are needed to prepare 250. mL of this solution (assume the density of the saline solution is 1.0 g/mL)?
gasoline has a density of 0.67 g/mL at 20 degrees celcius. what is the mass of gasoline in your cars tank when it is filled to its capacity of 15.0 gallons.
A 100 g sample of an unknown liquid absorbs 2000 J of heat energy, raising the liquid's temperature from 50 ? C to 70 ? C . What is the speci?c heat capacity of this liquid? No phase change took pla
To reach the end point in the titration a total volume of 14.71mL of base was needed. What is the mass percent of benzoic and gallic acid?
when 230 ml of water is added to a stock solution of 2.5M 420.0 ml Na3PO4. what is the final concentration of Na+?
The density of palladium at 20°C is 12.0 g/mL and at 1550°C the density is 11.0 g/mL. What is the change in volume (in mL) of 4.21 kg Pd in going from 20°C to 1550°C?
What is the density of a block of unknown material with a mass of 14.72 g if the dimensions are:
If we completely hydrolyzed 0.18 kg of water in a 8.2 L container at 300 K, what would be the total final pressure of the system in atmospheres?
Earth's atmosphere contains many volatile substances that are present in trace amounts. The following quantities of these trace gases were found in a 1.0 gallon sample of air. Calculate number of mo
If a sample containing 2.10 mL of nitroglycerine (density = 1.592 g/mL) is detonated, how many total moles of gas are produced?
Muriatic acid can usually be purchased at the hardware store as a 20.0% concentration. How many grams of solution would be needed in order to get 12g of HCl ?
The dimerization of NO2 has a rate constant at 25 °C of 2.45 x 10-2 L/mol min. What will be the concentration of NO2 after 120. seconds, given a starting concentration of NO2 of 11.5 mol/L
100 mol/h of n-octane is burned in 80.0% excess air to 95.0% conversion. The n-octane is converted to a mixture carbon dioxide, carbon monoxide, and water, where the ratio of carbon dioxide to carbo
At 27 degrees C, Kp = 0.095 for the equilibrium: NH4HS (g) -> <- NH3 (g) + H2S (g). A sample of solid NH4HS is placed in a closed vessel and allowed to equilibrate. Calculate the equilibrium p
the normal pH in a human stomach is between 1.5 and 3.5, the Medical Examiner examined the stomach and found the hydrogen ion [H+] concentration to be 10-12 moles/liter (0.0000000000010 moles/liter.
A 12.39 g sample of phosphorus reacts with 42.54 g of chlorine to form only phosphorus trichloride. if it is the only product, what mass of PCl3 is formed?
138g of potassium and 448g of iodine react completely to form iodine. if 138g of potassium and 41g of iodine has been used, what mass of KI would have been produced ?
CaC2(s) + 2H2O(l) = C2H2(g) + Ca(OH)2(aq) . If 48 g of CaC2 are consumed in this reaction, how much H2O is needed?
Densit gold is 19.31 g/cm3 and density of platinum is 21.43 g/cm3 if equal masses of gold and platinum are transferred to equal volumes of water in separate graduated cylinders which graduated cylin
What is the limiting reagent in the reduction of camphor with sodium borohydride assuming you start with .1 g of camphor and .1 g of sodium borohydride?
The original volume [before the 0.406 mole C(g) begins to decompose] is 10.00 L. What is the volume in the cylinder at equilibrium?