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Dennis_Churaev [7]
4 years ago
9

Giving Brainliest

Chemistry
1 answer:
lianna [129]4 years ago
3 0

Explanation:

Pumice is an extrusive igneous rock that is produced through volcanic activities.

A rock like pumice will pass through the rock cycle and be transformed to other rock types with time.

Pumice contains rich mafic minerals giving it that black appearance.

The consequences of this is that when the rock is acted upon by weathering elements, it is weathered to clay. A fine grained sediment. It will eventually be transformed to shale or claystone sedimentary rocks.

If is goes through the metamorphic path, a schist will form under conditions of high pressure and temperature. New minerals will grow and metamorphic transformation would be vivid.

Eventually, both sedimentary and metamorphic rocks can be subducted and will form the original melt again.

learn more:

Rocks brainly.com/question/2817889

#learnwithBrainly

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A person walking covers 5.20 m in 10.4 s. How fast is the person moving?
salantis [7]

Answer:

<h2>0.50 m/s</h2><h2></h2>

Explanation:

Velocity = distance over time

where distance = 5.20 m

                   time = 10.4 s.

velocity = <u>  5.20  m </u>

                  10.4 s.

            = 0.50 m/s  

8 0
3 years ago
MARKING BRAINLIEST! please help asap, i need a and b, thank you
defon

The time required to reduce the concentration from 0.00757 M to 0.00180 M is equal to 1.52 × 10⁻⁴ s. The half-life period of the reaction is 9.98× 10⁻⁵s.

<h3>What is the rate of reaction?</h3>

The rate of reaction is described as the speed at which reactants are converted into products. A catalyst increases the rate of the reaction without going under any change in the chemical reaction.

Given the initial concentration of the reactant, C₀= 0.00757 M

The concentration of reactant after time t is C₁= 0.00180 M

The rate constant of the reaction, k = 37.9 M⁻¹s⁻¹

For the first-order reaction: C_t =C_0-kt

0.00180 = 0.00757 - (37.9) t

t =  1.52 × 10⁻⁴ s

The half-life period of the reaction: t_{\frac{1}{2} } =\frac{C_0}{2k}

t_{\frac{1}{2} } =\frac{0.00757}{2\times 37.9}

Half-life of the reaction = 9.98 × 10⁻⁵s

Learn more about the rate of reaction, here:

brainly.com/question/13571877

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5 0
1 year ago
When an object's speed and direction are known, so is its _____. A. mass B. velocity C. momentum D. acceleration
dexar [7]

D. acceleration

Explanation:

When an object's speed and direction are known, its acceleration can also be determined.

Acceleration is defined as the change in velocity of a body in motion with time.

Most times, velocity and speed can be changed if the direction a body is traveling is known.

            Acceleration  = \frac{Change in velocity }{time}

The S.I unit of acceleration is always expressed as m/s²

Learn more:

Acceleration brainly.com/question/3820012

#learnwithBrainly

3 0
3 years ago
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notsponge [240]

Answer:

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Explanation:

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Beta particles are<br> 1. Protons<br> 2.Quarks<br> 3.Electrons
Ira Lisetskai [31]
The answer is Electrons! :D hope this helps
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