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andrey2020 [161]
3 years ago
12

Need help on question 3 plz URGENT HELP PLZ

Chemistry
1 answer:
Law Incorporation [45]3 years ago
5 0
Alloys are the homogeneous mixture of metals and non metals.... they are used in making cars and jewellery to make them more featurable,,, means that they would possess high regidity to the destruction .... both features of metal and nonmetal
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The age of water or wine may be determined by measuring its radioactive tritium(3H) content. Tritium, present in a steady state
notsponge [240]

Answer: 29.0 years

Explanation:

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant

t = age of sample

a = let initial amount of the reactant

a - x = amount left after decay process  

a) for completion of half life:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

t_{\frac{1}{2}}=\frac{0.693}{k}

k=\frac{0.693}{12.5years}=0.0554years^{-1}

b) for decomposition of 80 % of reactant

t=\frac{2.303}{0.0554}\log\frac{100}{100-80}

t=\frac{2.303}{0.0554}\log\frac{100}{20}

t=29.0 years

The age of a suspected vintage wine that is 20 % as radioactive as a freshlybottled specimen is 29.0 years

4 0
3 years ago
Does substitution reactions cause haloalkanes?
ivanzaharov [21]

Answer:

No, that sort of reaction do not form named compounds.

Explanation:

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Al+Mn2+>Al3++Mn. How many electrons will be lost in all?
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It is probably 6 just divide
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AgNO2+Na3PO4<br><br> Solve and predict if its a precipitate
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