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pantera1 [17]
2 years ago
7

Please helpp! ill mark brainlist (no bots or links ill report u)

Chemistry
2 answers:
raketka [301]2 years ago
7 0

Answer:

D)

Explanation:

The heat from the mantle makes the rocks at the bottom of lithosphere slightly soft. This causes the plates to move. The movement of these plates is known as plate tectonics.

ruslelena [56]2 years ago
5 0
Plates at our plantes surface move because of the intense heat in the earth core that causes molten rock in the mantle layers to move. It moves in a pattern called a convection cell that forms when warm material rises, cools and eventually sink down. As the cooled materials sink down, it is warmed and rises again.
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A chemical reaction yields 3 moles of lithium hydroxide (LiOH). How many grams of
grin007 [14]

72g

Explanation:

Given parameters:

Number of moles of LiOH = 3moles

Unknown:

Mass of LiOH = ?

Solution:

A mole of  substance is a unit used to make quantitative measures in chemistry.

It is the amount of substance that contains the avogadro's number of particles.

The mole is related to mass using the expression below;

    Mass of a substance = number of moles x molar mass

Molar mass of LiOH = 7 + 16 + 1 = 24g/mol

 Mass of LiOH = 3 x 24 = 72g

learn more:

Number of moles brainly.com/question/1841136

#learnwithBrainly

8 0
3 years ago
53. A firefighter of mass 80 kg slides down a vertical pole
Zielflug [23.3K]

Answer:

Answer is given below:

Explanation:

<em>Given Data:</em>

mass = 80kg

acceleration = 4 ms

force = 800N

<em>Find out:</em>

friction = ?

<em>Formula</em><em>:</em>

F-friction = weight - f-net

<em>Solution:</em>

weight = (80)(10)

           = 800 N

F-net = ma =(80)(4) = 320N

F-friction = weight - F-net

               =800 N - 320N

               =480N

<em>Answer</em> :

Friction = 480 N

   

6 0
3 years ago
What the correct answer
True [87]

Answer:

none

Explanation:

the correct option would be Ar 3d3 4s2

3 0
2 years ago
Aluminum is an element. Which best describes what makes up a sample of aluminum?
Ksivusya [100]

Answer:

One kind of atom.

Step-by-step explanation:

An <em>element</em> consists of one kind of atom.

Al is an element, so Al consists of one kind of atom.

C  and D are <em>wrong</em> , because Al contains only atoms of aluminium.

8 0
3 years ago
Read 2 more answers
According to the video, what are some products invented directly by Chemists, or through their basic research? Check all that ap
bonufazy [111]

answer:

- drugs (a)

- fibers (b)

- paints (d)

- cosmetics (e)

- electronic components (f)

4 0
2 years ago
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