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SIlver tarnishes in the presence of Hydrogen Sulfide (rotten egg odor) , also found in chinese dry wall and oxygen because of the reaction: 4Ag + 2H2S + o2 ->2Ag2S + 2H2O
How many grams of Ag2S could be obtained from a mixture of 190.00g Ag, 28.0g H2S and 16.00g O2 and how many grams of the non-limiting reactants are left?
Caffeine (c8h10n8o2) is a stimulant found in coffee and tea . A solution of caffeine in chloroform (CHCl3) as a solvent has a concentration of 7.60×10-2.
A student used 20.0 mL of 0.1035 M NaOH to titrate 20 mL of orange juice. How many grams of citric acid were present in the sample? The molar mass of citric acid, H3C6H5O7, is 192.12 g/mol.
Benzoyl peroxide, the substance most widely used against acne, has a half-life of 9.8 103 days when refrigerated. How long will it take to lose 7% of it potency (93% remaining)
Draw a Lewis structure for SO2 in which all atoms obey the octet rule. Show formal charges. 2 Draw a Lewis structure for SO2 in which all atoms have a formal charge of zero. Explicitly showing the zero charges is optional.
Determine what volume of N 2 is released at 0.915atm of pressure and at the temperature of 25 degree celcius from a tank full of liquid N 2 ? (d=0.808g/mL)
how many mL of 0.294 m sulfuric acid would it take to neutralize 61.71 mL of 0.519 M sodium hydroxide
Calculate the sample weight of liquid bleach containing 5.0% by weight of NaOCl that would oxidize enough I- to consume 0.80 mL of 0.15 M sodium thiosulfate.
Write a short article about how chromatography is used in every day life. I've been unsuccessful finding much information on exactly how and why it is used for any specific task
There is an increase in temperature of 56 K. Calculate the heat lost or gained by the system in response to this change in the external temperature.
If the optical rotation of pure (R)-2-butanol is -13.5°, then you would expect the optical rotation of racemic 2-butanol to be a) -13.5° b) +13.5° c) 0° d) can't tell
What's a net zero molecular dipole moment. and explain specifically why does [IF2]- have a net zero molecular dipole moment
sodium azide, a compound containing only sodium (Na) and Nitrogen (N), is used as a propellant for inflating airbags in some automobiles. A sample of sodium azide was weighed into a crucible.
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