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maria [59]
3 years ago
8

How does the rock cycle and plate tectonics interfere with geochemists trying to determine the age of the Earth? Chose the best

answer.
The rock cycle and plate tectonics cause Earth to lose its outer layer every one billion years as it creates new crust.


The rock cycle and plate tectonics cause Earth's rocks to break down over time and they are recycled through natural processes.


The rock cycle and plate tectonics cause Earth's original rocks to be buried deep in the ocean where they cannot be discovered.
Chemistry
1 answer:
Phoenix [80]3 years ago
4 0

Answer:

The rock cycle and plate tectonics cause Earth's rocks to break down over time and they are recycled through natural processes.

Explanation:

Rock cycle(Attachment-1)

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How many formula units make up 12.8 g of magnesium chloride (MgCl2)? Express the number of formula units numerically.
Cloud [144]
<h3>Answer:</h3>

8.09 × 10²² formula units

<h3>Explanation:</h3>

Mass of MgCl₂ is 12.8 g

Required to calculate the formula units

1 mole of a compound contains the Avogadro's number formula units

That is;

1 mole = 6.022 × 10²³ formula units

<h3>Step 1: Calculate the moles of MgCl₂ in 12.8 g </h3>

The molar mass of MgCl₂ is 95.211 g/mol

Number of moles = Mass ÷ molar mass

Moles of MgCl₂ = 12.8 g ÷ 95.211 g/mol

                          = 0.1344 mole

<h3>Step 2: Calculate the formula units of MgCl₂</h3>

1 mole =  6.022 × 10²³ formula units

Therefore;

Number of formula units = Moles × 6.022 × 10²³ formula units

                                    = 0.1344 mole × 6.022 × 10²³ formula units

                                     = 8.09 × 10²² formula units

Therefore, there are 8.09 × 10²² formula units in 12.8 g of MgCl₂

6 0
4 years ago
What does graduated mean when talking about cylinders and beakers
Juliette [100K]
Has markings along the cylinder/beaker that indicate the volume of liquid inside them. .
7 0
3 years ago
WILL GIVE BRAINLIEST
erastova [34]

Answer:

It is a force acting on the object.

Explanation:

The answer option which is true about the weight of an object is: C. It is a force acting on the object.

Weight can be defined as the force acting on a physical body or an object as a result of gravity. Also, the weight of an object is measured in Newton.

Mathematically, the weight of an object is given by the formula;

Where;

m is the mass of the object.

g is the acceleration due to gravity.

In conclusion, the weight of an object is the force acting on an object due to gravity.

4 0
2 years ago
The element chlorine is represented by the symbol ____. (Capitalization is important.) Answer for Blank 1:
gavmur [86]
It should be Cl 
next to the capital C is an L btw
6 0
4 years ago
Read 2 more answers
A candle slowly burns until the last bit of wax and wick are gone. The two reactants in this chemical reaction are the wick and
Aleonysh [2.5K]

The component of the candle burning in the surrounding has been the oxygen in the air.

The burning of candle wax and wick has been the chemical reaction. It has been based on the reaction of wick with the atmospheric oxygen, resulting in the formulation of the wax burning.

<h3>Chemical reaction of burning of wax</h3>

The wax has been vaporizes by the heat of the flame, that has been resulted by the burning. The wick has been able to react with the oxygen and form the byproducts that helps in flame burning.

The end products have been wick and oxygen as the wax has been consumed in the reaction. The air in the surrounding has oxygen as the part of the system, as it has been involved in the reaction.

Learn more about candle burning, here:

brainly.com/question/25955977

6 0
2 years ago
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