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3 years ago

1.

2 answers:

8 0

Igneous rock is formed by cooling magma. Sedimentary rock is formed through the lithification process of cementing, compacting, and hardening of the sediments. Metamorphic rock is formed by metamorphosis of igneous and sedimentary rocks.

FinnZ [79.3K]3 years ago

7 0

Answer:

1- Option (2)

2- Option (3)

3- Option (1)

Explanation:

The rock cycle refers to the cyclic process that leads to the formation of three different types of rocks namely the igneous, sedimentary and the metamorphic rocks, and also their alteration from one rock type to another under certain factors and conditions.

In order to form another type of rocks that are to be deposited in some other environment, the source rock must undergo the process of weathering and erosion. Weathering leads to the breakdown of rocks and erosion leads to the transportation of the broken fragments and sediments. This new sediments after deposition and lithification will give rise to the formation of sedimentary rocks such as Sandstone and Limestone.

The rocks that are formed under extremely high pressure and temperature condition are usually known as metamorphic rocks. These are directly obtained from the previously existed sedimentary or igneous or other metamorphic rocks. So they are also known as secondary rocks. For example, Quartzite, Schist, and Gneiss.

The rocks that are directly derived from the cooling and solidification of magma are known as igneous rocks. When these rocks are crystallized below the earth's surface then they are called intrusive igneous rocks, and when they crystallized on the earth's surface then they are called extrusive igneous rocks. For example, Granite and Basalt.

Thus, the correct answers are mentioned above.

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The modern periodic table is arranged in order of increasing. true or false

qaws [65]

Answer:

Increasing atomic number - True

Explanation:

The modern table is based on Mendeleev’s table, except the modern table arranges the elements by increasing atomic number instead of atomic mass.

The Atomic number is the number of protons in an atom, and this number is unique for each element. For example, Hydrogen has an atomic number of 1, Calcium has an atomic number of 20.

In the modern periodic table the elements are further arranged into:

- rows, called periods, in order of increasing atomic number. Elements in the same periods have the same number of shells.

- vertical columns, called groups, where the elements have similar properties. Elements in the same group has the same number of valency (outermost number of electrons)

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3 years ago

True or false?<br><br> Kinetic energy depends only on an object’s speed and velocity.<br><br> Help!

AlekseyPX

False, kinetic energy depends on an objects mass and speed

8 0

3 years ago

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Consider a mixture of soil and water and compare it to a colloid, such as milk. Which property best differentiates these two mix

antoniya [11.8K]

Milk is colloid while soil and water is a heterogeneous mixture and is a suspension mixture.

6 0

3 years ago

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How do I Balancing Chemical Equations

Black_prince [1.1K]

Answer:

what?

Explanation:

6 0

3 years ago

Anybody good at chemistry?

Luba_88 [7]

Answer:

Explanation:

Given data:

Mass of lead = 25 g

Initial temperature = 40°C

Final temperature = 95°C

Cp = 0.0308 j/g.°C

Heat required = ?

Solution:

Specific heat capacity: Cp

It is the amount of heat required to raise the temperature of one gram of substance by one degree.

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = Final temperature = initial temperature

ΔT = 95°C - 40°C

ΔT = 55°C

Q = 25 g × 0.0308 j/g.°C × 55°C

Q = 42.35 j

Given data:

Mass = 3.1 g

Initial temperature = 20°C

Final temperature = 100°C

Cp = 0.385 j/g.°C

Heat required = ?

Solution:

Specific heat capacity: Cp

It is the amount of heat required to raise the temperature of one gram of substance by one degree.

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = Final temperature = initial temperature

ΔT = 100°C - 20°C

ΔT = 80°C

Q = 3.1 g × 0.385 j/g.°C × 80°C

Q = 95.48 j

Given data:

Mass of Al = ?

Initial temperature = 60°C

Final temperature = 30°C

Cp = 0.897 j/g.°C

Heat released = 120 j

Solution:

Specific heat capacity: Cp

It is the amount of heat required to raise the temperature of one gram of substance by one degree.

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = Final temperature = initial temperature

ΔT = 30°C - 60°C

ΔT = -30°C

120 j = m × 0.897 j/g.°C × -30°C

120 j = m × -26.91 j/g

m = 120 j / -26.91 j/g

m = 4.46 g

negative sign show heat is released.

Given data:

Mass of ice = 1.5 g

Change in temperature = ?

Cp = 0.502 j/g.°C

Heat added= 30.0 j

Solution:

Specific heat capacity: Cp

It is the amount of heat required to raise the temperature of one gram of substance by one degree.

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = Final temperature = initial temperature

30.0 j = 1.5 g × 0.502 j/g.°C × ΔT

30.0 j = 0.753 j/°C × ΔT

30.0 j /0.753 j/°C = ΔT

39.84 °C = ΔT

3 0

3 years ago