PLZ FASTLEY ANSWER The images show two metamorphic rock samples.


Left: light colored rock with coarse texture. Right: red and white rock with rounded grains and coarse texture.


Which statement accurately describes these rocks?


Both rocks are non-foliated.

Neither rock has randomly arranged grains.

Both rocks formed at Earth’s surface.

Neither rock formed through extreme heat or pressure.

Answer: [tex]2Cl^-(l)\rightarrow 2e^-+Cl_2(g)[/tex]

Explanation:

Electrolysis of a subastance is breaking it into its constituents by the action of electrical current.  

In the electrolysis of molten sodium chloride, sodium metal is produced at the cathode which is a negative electrode and chlorine gas produces as the anode which is a positive electrode.

[tex]2NaCl(l)\rightarrow 2Na^++2Cl^-[/tex]

At anode : [tex]2Cl^-(l)\rightarrow 2e^-+Cl_2(g)[/tex]

At cathode : [tex]2Na^+(l)+2e^-\rightarrow 2Na(l)[/tex]

2Cl- (l) → Cl2 (g) + 2e-

Answer:

what is this for?

Explanation:

Answer:

Elements

Explanation:

"Elements are substances, forms of matter and gasses that are made up of only one type of atom."

Panico. (2012, September). The Atomic Model and Matter. Retrieved December 15, 2020, from https://odysseyk12.org/hs/teachers/panico/pdf/atoms/atoms.html

Wood's tensile strength is reduced. Another risk factor for the strength of the wood is the loading time. The rigidity of wood is affected by temperature.

Wood is one of the most common and useful natural materials. It is the main tissue that supports and conducts nutrients in trees and other plants. Wood comes in a variety of colours & grain patterns and is produced by numerous botanical species, comprising both gymnosperms & angiosperms.

Its wood's tensile strength is reduced. Another risk factor for the strength of the wood is the loading time. The rigidity of wood is affected by temperature. Unfavourable weather and unexpected temperatures will have an impact on the wood's strength. Among its attributes are mechanical, chemical, and physical qualities.

Therefore, wood's tensile strength is reduced. Another risk factor for the strength of the wood is the loading time.

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Answer:

I think it's unbalanced

(I'm so sorry if it's wrong)

Hope this helps!

Answer:

unbalanced

Explanation:

Answer:

1.4 g CaO

Explanation:

Given data:

Mass of calcium carbonate = 2.5 g

Mass of Cao remain in tube = ?

Solution:

Chemical equation:

CaCO₃    →     CaO + CO₂

Number of moles of CaO:

Number of moles = mass/molar mass

Number of moles = 2.5 g/ 100 g/mol

Number of moles = 0.025 mol

now we will compare the moles of CaO with CaCO₃.

                    CaCO₃        :          CaO

                        1              :             1

                    0.025         :         0.025

Mass of CaO:

Mass = number of moles × molar mass

Mass = 0.025 mol × 56 g/mol

Mass = 1.4 g

Answer:

1.4g CaO

Explanation:

Did the exam and got it right. Hope this helps

Answer:

It’s eutrophication

Explanation:

There is no way it can be DEFORESTATION or NON  SUSTAINABLE SPECIES

Non sustainable harvesting has something to do with animals and eutrophication means adding excessive nutrients

Answer:A.

Explanation: I took the test, sorry if this is incorrect

Answer:

D. They buckle upward and form mountains.

Explanation:

When two plates (either oceanic or terrestrial) converge and they are of similar density then they will crash into each other and form mountains. A great example of this is when India crashed into the Asian continent and the Himalayas were formed.

Answer:

D-  Y -Z -X -W

:)

The solution with lowest pH are more acidic and those with higher pH values are basic. The given solutions can be ranked from the strongest to weakest acid as Y Z X W.

pH of a solution is the measure of its H+ ion concentration. Mathematically it is the negative logarithm of H+ ion concentration of the solution. The acidic solutions contains more H+ ions.

A pH value of 7 represents a neutral solution. The pH above 7 is basic solution and a solution with pH below 7 is acidic in nature. A pH scale can be used to measure the range.

The pH of 1  and 3 indicates strong acidic solutions and 5 and 6 are weakly acidic . The lowest value of pH indicates highest acidity. Therefore, the correct order is Y Z X W.

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Answer:

Mass = 234 g

Explanation:

Given data:

Mass of NaCl produced = ?

Moles of chlorine = 2.0 mol

Solution:

Chemical equation:

2Na + Cl₂    →     2NaCl

now we will compare the moles of NaCl with chlorine gas.

           Cl₂           :          NaCl

             1            :           2

            2.0         :         2/1×2.0 = 4.0 mol

Mass of NaCl;

Mass = number of moles × molar mass

Mass = 4.0 mol × 58.5 g/mol

Mass = 234 g

Answer:838J/kg/K

Explanation:

use : Q= mS◇ T

20 oz. coconut oil

10 oz. olive oil

9 oz. distilled water

essential oils

colorants (optional)

dried herbs or flowers (optional)

soap base accordingly

Answer:

the octet rule is a chemical rule of thumb that reflects the observation that main group elements and bonds and such a way that each has a electrons in its valence shell giving the same electronic configuration as noble gas

Answer:

−0.60205999

Explanation:

Answer:

O, Ca, Zn, Br

Sc, K, Br,

Explanation:

The correct order of the chemical elements from highest to lowest electronegativity is: C. Br, Zn, Sc, Ca, K.

Electronegativity refers to a measure of the ability of an atom of a chemical element to attract any shared pair of electrons.

Generally, the electronegativity of a chemical element typically increases across the period from left to right.

In Chemistry, the electronegativity of some of the chemical element are:

Hence, the order of the chemical elements from highest to lowest electronegativity is:

1. Bromine (Br) = 2.96

2. Zinc (Zn) = 1.65

3. Scandium (Sc) = 1.36

4. Calcium (Ca) = 1.0

5. Potassium (k) = 0.82

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Answer:3 oxygen atoms.

Explanation: Each formula unit of Fe2O3 contains 2 atoms of iron and 3 atoms of oxygen (technically they are ions, but that doesn't matter).

Answer:

The produce large circular currents in all the ocean basins. Currents, The North Equatorial Current, the Gulf Stream, the North Atlantic Current, and the Canary Current.

Explanation:

Answer:

X 154

Check solution in explanation

Explanation:

Average atomic mass = ( mass 1× abudance) + ( mass 2× abudance)+ ( mass 3× abudance) / 100

(149×13.8)+(152×44.9) +(154×41.3)/100

2056.2 + 6824.8 + 6360.2/100

=152.412

Mass of ammonia produced : 121.38 g

Given

Reaction

3H₂(g) + N₂(g) ⇒ 2NH₃(g)

100g of N₂

Required

Ammonia produced

Solution

mol of N₂ :

[tex]\tt mol=\dfrac{mass}{MW}\\\\mol=\dfrac{100}{28}\\\\mol=3.57[/tex]

From the equation, mol ratio of N₂ and NH₃ = 1 : 2, so mol NH₃ :

[tex]\tt \dfrac{2}{1}\times 3.57=7.14~moles[/tex]

mass of NH₃(MW=17 g/mol) :

[tex]\tt mass=mol\times MW\\\\mass=7.14\times 17\\\\mass=121.38~g[/tex]

Answer:

positive ions are smaller than their parent atoms and negative ions are larger than their parent atoms.

Answer:

A. the valence electrons

Explanation:

Answer:

The valence electrons

Explanation:

The valence electrons determine an element's properties because chemical properties of each element are determined by the element's electronic configuration and PARTICULARLY by its outermost valence electrons. I hope it helps!

                      ~Good luck

Answer:

Matter says that the amount of matter stays the same, even when matter changes form. Sometimes it may seem that matter disappears during a science experiment, but this law tells us that matter cannot magically appear or disappear, it simply changes from one form to another.

Explanation:

brainliest?

Answer: Hope this helps:)

The Law of Conservation of Mass dates from Antoine Lavoisier's 1789 discovery that mass is neither created nor destroyed in chemical reactions. In other words, the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction. The law of conservation of matter states that in any given system that is closed to the transfer of matter, the amount of matter in the system stays constant. The law of conservation of matter says that in chemical reactions, the total mass of the products must equal the total mass of the reactants. French chemist A. Lavoisier laid the foundation to the scientific investigation of matter by describing that substances react by following certain laws. These laws are called the laws of chemical combination. Matter says that the amount of matter stays the same, even when matter changes form. Sometimes it may seem that matter disappears during a science experiment, but this law tells us that matter cannot magically appear or disappear, it simply changes from one form to another. Matter can change form through physical and chemical changes, but through any of these changes, the matter is conserved. The same amount of matter exists before and after the change—none is created or destroyed. This concept is called the Law of Conservation of Mass.

Answer:

True

Explanation:

Answer:

True ;)

Explanation:

Answer:

C

Explanation:

Silt is very benifical for plant growth. So the one with the most silt would be the best for gardening soil.

Answer: C

Explanation:

Explanation:

yes its hard if you don't pay attention.

Yes, the math is harder but chemistry is not it's really fun the math does get harder tho.

Answer:

letter A is the answer

Explanation:

At the end of a loan the car belongs to you, but at the end of a lease, the car still belongs to the lease company.

Answer:

90.4Kg

Explanation:

The energy required= latent heat of vaporization

Latent heat of vaporization of water= 2260 KJ/Kg

Mass of water = 0.04 Kg

Heat required= 0.04Kg× 2260 KJ/Kg

Heat required= 90.4Kg

Answer: The minimum number of kilo Joules needed is 90.4KJ.

Explanation:

The energy required= latent heat of vaporization.

Latent heat of vaporization of water= 2260 KJ/Kg

Mass of water = 0.04 Kg

Heat required= 0.04Kg× 2260 KJ/Kg

Heat required= 90.4KJ.

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