All categories

3 years ago

Identify the principle or law that identifies the relative age of the intrusion compared to layer Q.

Chemistry

1 answer:

Darya [45]3 years ago

7 0

Answer:

The answer is C (law of superposition)

Explanation:

You might be interested in

5.0 x 10^24 molecules equal

Ratling [72]

<span>4.999999999999999e</span>+<span>24 this is what i got on the calculator but i dont know if its right.</span>

8 0

3 years ago

The half-life of a radioactive isotope is the amount of time it takes for a quantity of that isotope to decay to one half of its

Sedaia [141]

Radio active decay reactions follow first order rate kinetics.

a) The half life and decay constant for radio active decay reactions are related by the equation:

$t_{\frac{1}{2}} =$ $\frac{ln 2}{k}$

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

Where k is the decay constant

b) Finding out the decay constant for the decay of C-14 isotope:

$Decay constant (k) = \frac{0.693}{t_{\frac{1}{2}}}$

$k = \frac{0.693}{5230 years}$

$k = 1.325 * 10^{-4} yr^{-1}$

c) Finding the age of the sample :

35 % of the radiocarbon is present currently.

The first order rate equation is,

$[A] = [A_{0}]e^{-kt}$

$\frac{[A]}{[A_{0}]} = e^{-kt}$

$\frac{35}{100} = e^{-(1.325 *10^{-4})t}$

$ln(0.35) = -(1.325 *10^{-4})(t)$

t = 7923 years

Therefore, age of the sample is 7923 years.

3 0

3 years ago

Why does the hull of an ocean -going ship rust quickly?

stepan [7]

Metal rusts when it oxidized around moisture.

4 0

3 years ago

Given the following equation: 2 K + Cl2 ---> 2 KCl

Ksivusya [100]

Answer:

2 moles of KCl will be produced

Explanation:

Given parameters:

Number of moles of K = 2 moles

Unknown:

Number of moles of KCl produced = ?

Solution:

To solve this problem;

Obtain a balanced chemical equation:

2K + Cl₂ → 2KCl ;

Since K is the limiting reactant, its amount will determine the extent of this reaction.

From the balanced equation;

2 moles of K will produce 2 moles of KCl

Given that 2 moles of K reacted, 2 moles of KCl will be produced

5 0

3 years ago

Explain how fluorine and aluminum would exchange valence electrons to form an ionic compound.

o-na [289]

Answer :

Explanation :

The aluminium and fluorine react to give ionic compound aluminium fluoride.

Aluminium has 1 valence electrons in their shell and fluorine has 7 valence electrons in their shell.

For the complete octet, both aluminium and fluorine exchange valence electrons to form an ionic compound.

The aluminium donates its three valence electrons to three fluorine atoms and they form one $Al^{3+}$ and three $F^-$ ions.

Electron transfer image is shown below.

5 0

3 years ago

Read 2 more answers