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algol [13]
3 years ago
9

Which of the following methods can be used to determine the relative age of rock and strata? Select all that apply.

Chemistry
2 answers:
jolli1 [7]3 years ago
8 0

Answer:

Stratigraphy and Biostratigraphy

Explanation:

Stratigraphy is a science, a branch of geology, which studies the composition, structure and succession of stratified rocks in order to reconstruct the physical history of planet Earth.  The study of rock strata provides information on various formation environments and the ancient physical landscapes of the earth. With stratigraphy it is possible to determine the relative age of the rock and strata. In addition, stratigraphy is also able to provide data on the climate of our planet for thousands or even millions of years and also enables us to determine the time when a particular animal or plant organism lived when one of these is found in a particular rock stratum.

Biostratigraphy is a branch of stratigraphy. In biostratigraphy the relative age of rock and strata is defined by the type or species of fossils that are found in this layer. For example, Rincosaurs are found in the upper Triassic. If a paleontologist finds a fossil of Rincosaurus, this layer is from the Triassic.

avanturin [10]3 years ago
4 0

I believe the answer is Archeolegy


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100.0 mL of Ca(OH)2 solution is titrated with 5.00 x 10–2 M HBr. It requires 36.5 mL of the acid solution for neutralization. Wh
miskamm [114]

Answer:

The number of moles HBr = 0.001825

The concentration of Ca(OH)2 = 0.009125 M

Explanation:

Step 1: Data given

Volume of the Ca(OH)2 = 100.0 mL = 0.100 L

Molarity of HBr = 5.00 * 10^-2 M

Volume of HBR = 36.5 mL = 0.0365 L

Step 2: The balanced equation

Ca(OH)2 + 2HBr → CaBr2 + 2H2O

Step 3: Calculate molarity of Ca(OH) 2

b*Va* Ca = a * Vb*Cb

⇒with b = the coefficient of HBr = 2

⇒with Va = the volume of Ca(OH)2 = 0.100 L

⇒with ca = the concentration of Ca(OH)2 = TO BE DETERMINED

⇒with a = the coefficient of Ca(OH)2 = 1

⇒with Vb = the volume of HBr = 0.0365 L

⇒with Cb = the concentration of HBr = 5.00 * 10^-2 = 0.05 M

2 * 0.100 * Ca = 1 * 0.0365 * 0.05

Ca = (0.0365*0.05) / 0.200

Ca = 0.009125 M

Step 4: Calculate moles HBr

Moles HBr = concentration HBr * volume HBr

Moles HBr = 0.05 M * 0.0365 L

Moles HBr = 0.001825 moles

3 0
3 years ago
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hoa [83]
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3 years ago
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tekilochka [14]

The amount of the solute present in the given solution is called the concentration. The best way to represent the concentration of the solution is \rm [K_{2}CrO_{4}].

<h3>What is molar concentration?</h3>

Molar concentration is the molarity of the solution that is the measure of the concentration of the solute dissolved in the solution.

The formula for calculating molar concentration is given as,

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Learn more about the molarity here:

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2 years ago
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7 0
3 years ago
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