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Explain how long will it take until 100 atoms of this isotope stay put active in the person? (A person accidentally breathes in 8 times 1018 atoms of this isotope). The first order rate constant for decay of the isotope if 0.086625 s-1
The equation looks like this: 100 = (8x1018)(e-.086625t)
Mathematically how to isolate t to get the amount of seconds?
determine the empirical and molecular formulas of a hydrocarbon which has a molecular weight of 84 mass unit which contains 85.7% carbon.
The half-equivalence point of a titration occurs half way to the end point, where half of the analyte has reacted to form its conjugate, and the other half still remains unreacted. If 0.260 moles of a monoprotic weak acid
However, upon carrying out both reactions for 15 minutes, the chemist finds that the reaction with the smaller equilibrium constant produced more of the desired product. Explain how this might be possible.
A collapsing star is estimated to have a mass of 1.0 x 1024 kg and a volume of 4.35m^3. Compute the density of the star in grams per milliliter.
Several minerals are metal carbonates as well as siderite is a mineral that is largely iron(ll) carbonate. State a balanced equation for the reaction of siderite with nitric acid.
How many grams of no2 will be produced when 5.00 moles of NO react?
A gasoline tank holds 14.9 gallons when full. Explain how many pounds of gasoline it will hold if the density of gasoline is 0.86g/m
If 145.0 mL of 0.350 M lithium hydroxide is required to titrate 35.0 mL of an unknown monoprotic acid, what is the molar concentration of the unknown acid.
a 28.20 g galvanized steel washer with copper coating is treated with nitric acid. the copper coating is completely
question an acetylene tank for oxyacelylene welding will provide 9340 liters of acetylene gas c2h2 at stp. how many
Write a balanced chemical equation for the reaction between MnO4- and I - in basic solution. The skeleton ionic reaction is given below. MnO4-(aq) + I -(aq) MnO42-(aq) + IO3-(aq)
calculate the ph of a buffer made with 0.50m phosphoric acid and 0.75m sodium dihydrogen phosphate. ka 7.5 x
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