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Calculate the pH of 0.510 L of a 0.220 M NH_4Cl and 0.220 M NH_3 buffer before and after the addition of the following substances. Assume that the volume remains constant.
Calculate the initial pH =
Calculate the pH after the addition of 0.0048 mol of NaOH.
Calculate the pH after the addition of 0.018 mol of HCl.
considering the given nbspreactions nbspas cocl2g 4nh3g conh22s 2nh4cls with ?gdeg -332.0 kj nh3g hclg nh4cls with
For each of the following equations, indicate the rate of change of all the other species relative to the rate of change of the underlined species
2 FeS + 3 N2 → 2 FeN + 2 SN2 This reaction has a 65.0% yield. How much N2 is consumed if 13.6 g of FeN are produced?
what is the concentration of the 25.0 mL of diluted drink in the volumetric flask?
what speed would this quasar seem to be receding from us? Give your answer in km/s and as a fraction of the speed of light.
Calculate the energy that must be removed to convert substance X from a gas at 119°C to a solid -47.9°C.
an 8 g sample of a copper ore was dissolved in an acid solution and then reacted with NO3- from a KNO3 salt solution. it required 71.5 ml of a .155 M KNO3 solution to fully react the copper in the ore sample.
If 2.5 mol of ethylene oxide is decomposed at 93 degrees celcius what will be the final temperature of the products? The heat capacity of the products is 110.13J/mol C?
Twenty grams of liquid mercury at 98.0 °C is placed in 47.0 g of water initially at 25.0 °C. What is the final temperature of the water, assuming the styrofoam calorimeter absorbs no heat at all?
I told you not to take the drug N-methyl Prozac, but if you did not listen to me and trusted your organic chemistry skills enough and took some, would anything happen because the synthesis we carried out made the racemic drug
A 25.0-mL sample of 0.100 M propanoic acid (HC3H5O2, Ka = 1.3 10-5) is titrated with 0.100 M NaOH solution. Calculate the pH after the addition of the following amounts.
If I took 5mg of salicylic acid and added it to a 500mL volumetric flask and bringing it up to volume with a 0.1M NaOH solution what would be the concentration of this?
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