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If 4.0 g of hydrogen and 10.0 g of oxygen are mixed according to the equation 2 H2 + O2 = 2 H2O, which is the limiting reagent?
Beggining with the absorbance of your unkown brass sample show ur calculations for a) Cu+(2) (aq) concentration; b) mass of Cu in brass; c) percent Cu in brass.
Determine the concentration of the sulphuric acid (H2SO4) solution If It takes 58 mL of 0.124 M potassium hydroxide(KOH) to neutralize 41.5 mL of sulphuric acid( H2SO4) solution.? Express your answers in units of moles/liter
Complete and balance the equation for this reaction in basic solution. Phases are optional.
A zero-order reaction has a constant rate of 2.00×10-4 . If after 50.0 seconds the concentration has dropped to 6.00×10-2 , what was the initial concentration?
A system is expanded against an external pressure of 2 atm, changing its volume from 10 to 35 L and absorbing 765 J as heat from the surroundings
Important information about Chem problem, A 25 mL sample of .13M HCl is mixed with 15mL of .24M NaOH. The pH of the resulting solution will be nearest. The answer is 11.9
Calculate the heat needed at 0 degrees celsius to make each of the following changes of state. kilocalories to freeze 285 of water.
What is the boiing point for each compound?
A certain weak acid, HA, has a Ka value of 6.7×10?7. Part A: Calculate the percent ionization of HA in a 0.10 M solution. Part B: Calculate the percent ionization of HA in a 0.010 M solution.
Anton Von L. a 17th century pioneer in the use of the microscope, described the microrganisms he saw as "animalcules" whose length was "25 thousandths of an inch."
If 30 ml of 0.150M cacl is added to 40ml of 0.1 M AgNo3. What is the mass of AgCl preciptate
If 4.50 g of methane gas (CH4) is in a 2.00-L container at 35°C, what is the pressure in the container?
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