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murzikaleks [220]
3 years ago
9

Which statements correctly describe the decay rates of radioactive isotopes?

Chemistry
2 answers:
Svetllana [295]3 years ago
6 0

Answer:

For plato, the answer is C: after each half tile, the amount of radioactive material is reduced by half

storchak [24]3 years ago
4 0

Answer: b} The exact time when an individual atom will decay can be accurately predicted.

c} After each half-life, the amount of radioactive material is reduced by half.

Explanation:

All radioactive decay  follows first order kinetics.

Rate law expression for first order kinetics is given by:

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

where,

k = rate constant

t = time taken for decay process

a = initial amount of the reactant

a - x = amount left after decay process

Expression for calculating half life, which is the time taken by the half of the reactants to decompose is:

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


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Write short note on<br>vegetation ​
bulgar [2K]

Answer:

vegetation is highly effective although we used it and it is surrounded around us a note would be that vegetation is general term for plant life of a region and there are 5 different types

Explanation:

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3 years ago
Balanced equation for the neutralization of these 2. HCl , Ca(OH)2
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Balanced equation:

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hope this helps!


5 0
3 years ago
Read 2 more answers
How do the differences in the polyatomic ions po3 3- and po4 3- help you determine whether each ends in -ite or -ate?
Tcecarenko [31]

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4 0
3 years ago
Acetic acid only partially ionizes in water. A solution contains a large quantity of acetic acid dissolved in water. How can thi
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4 0
3 years ago
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. How many grams of NaOH would you need to make 450 mL of a 0.250 M NaOH solution
Stella [2.4K]
You have molarity and you have volume. Use the formula :
Molarity(M)= Moles(N)/Liter(L)            to get the solution. 
450 ml= .450 L
.250 = N/.450
N=.1125 moles of NaOH.
 And since you know the moles, use the molar mass to figure out the grams.
<span> (40g/mol NaOH) x (.1125 mol) =  
4.5g of NaOH.
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Hope it helps. Good luck on chemistry.
7 0
3 years ago
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