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4 years ago

How does relative-age dating help scientists learn about fossils and the age of the earth?

Chemistry

1 answer:

Sedaia [141]4 years ago

8 0

Explanation:

Relative dating is used in determining a fossils approximate age comparing it with similar rocks and fossils whose age are known or formation of sedimentary rock . Whereas absolute dating is used in to determining the exact age of fossil by determining radiometric dating to measure the decay of isotopes, either within the fossil or more often the rocks associated to it.

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The specific heat capacity of oxygen is 918 J/kg °C. The specific heat capacity of water is 4181 J/kg °C. Which substance will r

Vsevolod [243]

Answer:

Water

Explanation:

Given the specific heat of oxygen is 918J/kg°C and the specific heat of water is 4181 J/kg°C.

Consider 1Kg mass of each substance.

Now 1 Kg of oxygen needs 918 J of energy to raise its temperature by 1°C

Also 1 Kg of water needs 4181 J of energy to raise its temperature by 1°C.

Clearly water recquires more energy when compared to oxygen.

Basically specific heat capacity is the amount of energy recquired to raise the temperature of a 1 kg body by 1°C.

7 0

3 years ago

The work is in the photo can i get answers please (;´༎ຶٹ༎ຶ`)

siniylev [52]

Answer:

yes

Explanation:

it is

3 0

3 years ago

2A (g) + Y (g) <-- --> 3C (g) + D (g)

insens350 [35]

Answer:

A. K = 59.5

Explanation:

Hello there!

In this case, since this reaction seems to start moving leftwards due to the fact that neither A nor Y are present at equilibrium, we should rewrite the equation:

3C (g) + D (g) <-- --> 2A (g) + Y (g)

Thus, the equilibrium expression is:

$K^{left}=\frac{[A]^2[Y]}{[C]^3[D]}$

Next, according to an ICE table for this reaction, we find that:

$[A]=2x$

$[Y]=x$

$[C]=0.651M-3x$

$[D]=0.754M-x$

Whereas x is calculated by knowing that the [C] at equilibrium is 0.456M; thus:

$x=\frac{0.651-0.456}{3} =0.065M$

Next, we compute the rest of the concentrations:

$[A]=2(0.065M)=0.13M$

$[Y]=0.065M$

$[D]=0.754M-0.065M=0.689M$

Thus, the equilibrium constant for the leftwards reaction is:

$K^{left}=\frac{(0.13M)^2(0.065M)}{(0.456M)^3(0.689M)}=0.0168$

Nonetheless, we need the equilibrium reaction for the rightwards reaction; thus, we take the inverse to get:

$K^{right}=\frac{1}{0.0168}=59.5$

Therefore, the answer would be A. K = 59.5.

Regards!

6 0

3 years ago

According to the Brensted-Lowry model write the equation for provided acid showing

Taya2010 [7]

Answer:

i dont know sorry

Explanation:

3 0

3 years ago

What universal force is weakest?

aksik [14]

There are four fundamental forces existing in the universe so called universal forces. They are the strong nuclear force, the weak nuclear force, the electromagnetic force and the gravitational force. The strong nuclear force is the strongest force acting while gravityis weakest.

7 0

4 years ago