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2 years ago

What is the age for rock layer C?

Chemistry

2 answers:

Viefleur [7K]2 years ago

8 0

Answer:

The principle of superposition states that the oldest sedimentary rock units are at the bottom, and the youngest are at the top. Based on this, layer C is oldest, followed by B and A.

Explanation:

kupik [55]2 years ago

5 0

Answer:

4.36 billion years

Explanation:

Before this study, the oldest dated rocks were from a body of rock known as the Acasta Gneiss in the Northwest Territories, which are 4.03 billion years old.

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This is craeted when white light is passed throught a prism

dlinn [17]

When light is passed through a prism it refracts and reflects i just did this in school hope it helped

3 0

3 years ago

Complete each sentence using the drop-down menus.

kirill115 [55]

Answer:

Desertification mainly impacts land resources.

Point and nonpoint sources refer to types of water pollution.

The process of people moving to cities, called urbanization , greatly impacts land, air, and water resources.

The burning of fossil fuels can cause smog and acid rain.

Explanation:

4 0

4 years ago

Read 2 more answers

A sample of O2(g) is placed in an otherwise empty, rigid container at 4224 K at an initial pressure of 4.97 atm, where it decomp

frutty [35]

Answer:

The value of $K_p$ at 4224 K is 314.23.

Explanation:

$O_2(g)\rightleftharpoons 2O(g)$

Initially

4.97 atm 0

At equilibrium

4.97 - p 2p

At initial stage, the partial pressure of oxygen gas = =4.97 atm

At equilibrium, the partial pressure of oxygen gas = $p_{O_2}=0.28 atm$

So, 4.97 - p = 0.28 atm

p = 4.69 atm

At equilibrium, the partial pressure of O gas = $p_{O}=2p=2\times 4.69 atm=9.38 atm$

The expression of $K_p$ is given as :

$K_p=\frac{(p_{O})^2}{(p_{O_2})}$

$K_p=\frac{(9.38 atm)^2}{0.28 atm}=314.23$

The value of $K_p$ at 4224 K is 314.23.

5 0

3 years ago

Determine the empirical formula of a compound containing 40. 6 grams of carbon, 5. 1 grams of hydrogen, and 54. 2 grams of oxyge

zavuch27 [327]

The empirical formula is C₂H₃O₂

<h3>What is Empirical formula of a compound ?</h3>

The empirical formula is the simplest whole number ratio of elements present in a compound.

The total molar mass of the compound is 118.084 g/mol.

mass of Carbon present = 40.6

mass of Hydrogen present = 5.1 grams

mass of Oxygen present = 2 grams

Moles of C = 40.6/12 = 3.38

Moles of H = 5.1/1.008 = 5

Moles of Oxygen = 54.2/15.999 = 3.38

Ratio of Moles of C to Oxygen is 1 : 1

Ratio of Moles of C to H is 1/1.5

Multiplying each mole fraction by 2

The empirical formula is C₂H₃O₂

To know more about Empirical Formula

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5 0

2 years ago

1. Which of the following should have the highest boiling point?

amm1812

Answer:

1. CBr4

2. C5H12

3. CF4

4. C8H17NH2

Explanation:

1. The boiling point of a molecule depends on its structure. Because the boiling point of molecules of similar size, depends on the differences in functional groups of the molecule.

For example CBr4 have a higher boiling point than other compounds because they have both London dispersion forces and dipole-dipole interactions.

2. Non-polar molecules like C5H12 will have low melting and boiling points, because they are held together by the weak van der Waals forces.

7 0

3 years ago