Answers created by Wil052

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• The combustion of butane, #C_4H_10#, produces carbon dioxide water. When one sample of butane was burned, 4.46 grams of water was formed. How many grams of oxygen gas were consumed?
  
• Question #423de
  
• How do you calculate the percentage composition of Oxygen in #N_2O_5#?
  
• If there are 100g of #NaClO_2# how would you calculate the percent composition by mass of each element in #NaClO_2#?
  
• What is the concentration (M) of sodium ions in 4.57 L of a 1.25 M #Na_3PO_4# solution?
  
• How many atoms are present in 1.55 mol of sodium?
  
• Question #96443
  
• A student performs an experiment that produces 5.78 grams of silver chloride. He calculated that 7.25 grams of silver chloride should have precipitated if all of the limiting reactant reacted. What is his percent yield?
  
• Question #ddcf4
  
• How do you balance #LiOH + H_2SO_4 -> Li_2SO_4 + H_2O#?
  
• A science beaker has a mass of .2400 kg, and a volume of 500 mL. What is the overall density of the science beaker?
  
• The unit pound per square inch (psi) is equal to #6.8 * 10^-2# atm. What is the equivalent pressure in pascals?
  
• A gas occupies a volume of 0.6 L at 10.1 kPa. What volume will the gas occupy at 101 kPa?
  
• Question #af319
  
• What mass of glucose, #C_6H_12O_6#, would be required to prepare #5 * 10^3# #L# of a #0.215# #M# solution?
  
• What is the molarity of a solution prepared by dissolving 141.6 g of citric acid, #C_3H_5O(COOH)_3#, in water and then diluting the resulting solution to 3500.0 mL?
  
• How many atoms are present in 4.00 mol of aluminum?
  
• Question #957e1
  
• Question #d90e9
  
• How many mg of a metal containing 45% nickel must be combined with 6 mg of pure nickel to form an alloy containing 78% nickel?
  
• What does the ideal gas law allow a scientist to calculate that the other gas laws do not?
  
• Alnico is a strongly magnetic alloy (solid mixture) of Co, Ni, Al and Fe. A 100.0 g sample of Alnico has 11.2g Al, 22.3g Ni, and 5.0g Co in it; the rest is Fe. How many moles of aluminum are there?
  
• How can an externality be negative?