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Answer:

CaCO3 + 2 HCl => CaCl2 + CO2 + H2O

Explanation:

CO2 will burst out when the reaction occurs in water, and the ions will be dissociated: Ca(2+) + 2 Cl (-)

Answer:

Area = 51.74cm ² 

Explanation:

5.6 × 9.4 = 51.744

Round above answer

= 51.74

Answer:

Nylon

Explanation:

Nylon was the first synthetic fiber made in the "fully synthetic" sense of that term. It was made by Wallace Carothers, an American researcher at the chemical firm DuPont in the 1930s.

Answer:

tsunamis

they are literally water earthquakes that force tons of water ashore and wipes out cities and towns

Answer:

All of the consumers and producers eventually become nourishment for the decomposers.

Explanation:

Energy is transferred between organisms in food webs from producers to consumers. The energy is used by organisms to carry out complex tasks. The vast majority of energy that exists in food webs originates from the sun and is converted (transformed) into chemical energy by the process of photosynthesis in plants.

Answer:

chemical is fire

and ductility is physical

Explanation:

give me brainliest please

Answer:

The system can operate on a set level of parts per million (ppm) chlorine, where the set level is automatically maintained.

Look at the image above, that should answer your question

Answer:

Heating a substance can cause the substance to change state

The way particles move changes when the substance's thermal energy changes.

Particles in all states of matter are constantly

moving.

Those are all correct and apply to water in all three phases

Answer:

The force of the atmosphere 200 KN.

Explanation:

Pressure is the ratio of force applied to the area  to which the force is applied.

i.e Pressure = [tex]\frac{Force}{Area}[/tex]

But, Pressure = 100000 pa (100000 N/ [tex]m^{2}[/tex]), and surface area = 2.0 [tex]m^{2}[/tex]

Thus,

100000 = [tex]\frac{Force}{2.0}[/tex]

⇒ Force = 100000 x 2.0

              = 200000

Force = 200 KN

The force of the atmosphere 200 KN.

Answer: Mg is a cation and Cl is an anion

Explanation: In more detail, if you look at the periodic table, the group number (or columns) of the elements, describe how many valence electrons, or how many electrons the element has available to have a complete an electron shell. Magnesium being in group 2, it has one 2 electrons that will be "donated" to an anion that it bonds with. However, Chlorine being in group 17, (look at the single digit number for double digit groups), it has 7 valence electrons. Knowing that a full electron shell is usually 8 electrons, it needs only one. Since Magnesium has 2 valence electrons to give away, two atoms of Chlorine gas will then bind to the Magnesium, where the 2 Chlorine atoms will take the electrons to fill their shells. Magnesium Chloride, in terms of charges when in ions, [Mg]2+ and 2 [Cl]-1

Magnesium chloride is formed when magnesium ion formed from the loss of two electrons and two chloride ions formed by accepting one electron each are held together by electrostatic attractive forces.

Magnesium chloride is an ionic compound which consists of magnesium ions and chloride ions.

Therefore, magnesium chloride is formed when magnesium ion formed from the loss of two electrons and two chloride ions formed by accepting one electron each are held together by electrostatic attractive forces.

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Answer:

1. An aquifer is an underground layer of water-bearing permeable rock, rock fractures or unconsolidated materials. Groundwater can be extracted using a water well. The study of water flow in aquifers and the characterization of aquifers is called hydrogeology.

2. watershed

Simply put, a watershed is “all the land area where the rain runs downhill to a certain point,” explains Carolyn Staudt, who leads NSF-funded science projects at the Concord Consortium on land use and its effects on water resources.

3. Healthy watersheds provide critical services, such as clean drinking water, productive fisheries, and outdoor recreation, that support our economies, environment and quality of life

What is an aquifer : natural underground storage area

What is the name for the land area where all rain runs downhill to a certain point : collection? normally would be called watershed.

Why are watersheds important for the maintenance of water quality : 1, 2

Answer:

white phosphorus is P4 in a tetrahedral shape and there are some really cool videos of it reacting in air and some not very cool ones where it was used militarily it is not stable, it needs to be stored underwater

red phosphorus is a larger more complicated network solid with many more phosphorus and is very stable

they are allotropes of phosphorus

Explanation:

Answer:

A

Explanation:

solute- thing being disolved

solvent- thing doing the disolving

so water is a solvent and salt is solute.

which is A

if my answer helps please mark as brainliest.

In the solution of salt and water, Water is the solvent; Salt is the solute. That is option A.

A solute is defined as the part of a solution that is being dissolved by the solvent. A typical example of solute is base and salts.

A solvent is defined as the dissolving part of a solution which is usually liquid in form. A typical example is water.

Therefore, the solute and solvent of a solution would be salt and water respectively. That is option A.

Learn more about solvent here:

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Answer:

um that looks like a molecular bond, but in energy bond, that would be a solid form i guess, it looks like two of the same atoms are fused together to create a molecular bond.

Explanation:

Answer: bond pair of O-O bond to a greater extent than the lone pair of electrons on the sulfur atoms in S-S bond....as a result S-S bond (bond energy=213 kj/mole)is much more stronger than O-O(bond energy = 138 kj/mole) bond …

Explanation: pls answer my question from my profile.

Answer:

0.683 moles of the gas are required

Explanation:

Avogadro's law relates the moles of a gas with its volume. The volume of a gas is directely proportional to its moles when temperature and pressure of the gas remains constant. The law is:

V₁n₂ = V₂n₁

Where V is volume and n are moles of 1, initial state and 2, final state of the gas.

Computing the values of the problem:

1.50Ln₂ = 5L*0.205mol

n₂ = 0.683 moles of the gas are required

Answer:

a

Explanation:

commensalism

Answer:

In chemistry and physics, a valence electron is an outer shell electron that is associated with an atom, and that can participate in the formation of a chemical bond if the outer shell is not closed; in a single covalent bond, both atoms in the bond contribute one valence electron in order to form a shared pair.

Answer:

MnO₂

Explanation:

Answer:

1.25 moles of tungsten carbide

Explanation:

Tungsten carbide, WC, is a substance that is produced prom carbon and tungsten as follows:

W + C → WC

Based on the reaction, 1 mole of Carbon produce 1 mole of tungsten carbide. That means if 1.25 moles of carbon are added in excess of tungsten, the moles of tungsten carbide produced are:

approximately 3 liter

because when we round of 2.67it will be 3

Answer:

Melting ice speeds up climate change.

Explanation:

The Arctic helps to regulate the world's temperature, so as more Arctic ice melts the warmer our world becomes.

Answer:

.....

Explanation:....

Answer:

The heat would flow from the hot solid to the cool solid until all temperatures are near equal.