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3 years ago

7

Relative dating will tell you exactly how old a rock layer is. True False

1 answer:

yawa3891 [41]3 years ago

6 0

Answer:

False. It doesn't give the exact age of the rock layers.

Explanation:

Geologists define relative dating as the sequence in which rocks are arranged. Rock layers are called strata and relative dating can't give the exact age of these layers.
It's assumed that the old rock layers will be at the bottom while the new rock layers will be at the top. This is described as superposition principle.
Normally, these sedimentary rock layers appear in a horizontal manner although they can slightly tilt.

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Which of these elements is unlikely to form covalent bonds? s, h, mg, ar, si?

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2 years ago

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sertanlavr [38]

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2 years ago

What is 5.73 moles in grams

Pani-rosa [81]

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2 years ago

A solid powder is known to be a mixture of NaCl and Na2CO3, but the relative amounts of each compound in the sample are unknown.

AveGali [126]

Answer:

Concentration of sodium carbonate in the solution before the addition of HCl is 0.004881 mol/L.

Explanation:

$Na_2CO_3(aq) +2 HCl(aq)\rightarrow 2NaCl(aq) + H_2O(l)+CO_2(g)$

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Then 0.009762 mol of HCl will recat with:

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Moles of Sodium carbonate = 0.004881 mol

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2 years ago

A sample of gas in a cylinder as in the example in Part A has an initial volume of 48.0 L , and you have determined that it cont

masya89 [10]

Answer:

0.45 moles

Explanation:

The computation of the number of moles left in the cylinder is shown below:

As we know that

$\frac{n1}{V1} = \frac{n2}{V2}$

we can say that

$n2 = n1 \times \frac{V2}{V1}$

where,

n1 = 1.80 moles of gas

V2 = 12.0 L

And, the V1 = 48.0 L

Now placing these values to the above formula

So, the moles of gas in n2 left is

$= 1.80 \times \frac{12.0\ L}{48.0\ L}$

= 0.45 moles

We simply applied the above formulas so that the n2 moles of gas could arrive

5 0

2 years ago