What is the density of the gold
A nugget of gold with a mass of 521g is added to 50.0mL of water. The water level rises to a volume of 77.0mL. What is the density of the gold?
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A quantity of 2.0 * 10^2 mL of 0.862 M HCL is mixed with 2.00 * 10^2 mL of 0.431 M Ba(OH)2. How many moles of water are produced in the reaction?
Chlorine gas can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric acid. How much MnO2 should be reacted with excess HCl to obtain 275 mL of chlorine gas at 5.0 °C and 650 mmHg
A cup of hot, steaming coffee sits on the desk at 80 degrees Celsius and is composed of mostly water with some things dissolved in it. the air in the room is 20 degrees Celsius and has gaseous water in it, along with nitrogen and oxygen. which wat
The epiglottis and the vocal cords then shut, trapping the air in the lungs, where it is warmed to 37 ^circ rm C and compressed to a volume of about 1.70 rm L by the action of the diaphragm and chest muscles. The sudden opening of the epiglottis a
What volume would a 0.0236-mole sample of helium gas would occupy at a temperature of 24°C and a pressure of 0.750 atm?
Consider 4.40L of a gas at 365 mm Hg and 20 degrees celcius. Express the pressure numerically in millimeters of mercury.
The volume of the mixture is 1.7 L, and its total pressure is 0.998 atm. Determine the partial pressure of the hydrogen gas in this mixture
A silver chloride precipitate weighing 0.2255 grams was obtained from 0.3448 grams of a soluble salt mixture. Calculate the percentage of chloride in the original sample.
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