Which Statement Correctly Explains How Magnesium And Chlorine Combine Too Form Magnesium Chloride A. (2023)

Firstly let's briefly explain the difference between compounds and mixtures. Compounds are substances composed of many of the same molecule. Pure water, therefore, is an example of a compound as it is repeated molecules of H20. Mixtures are when two or more compounds are grouped together in a substance but retain their discrete molecular forms. For example, salty water is a mixture of pure water molecules and salt molecules. Mixtures can be separated without breaking molecular bonds, however compounds cannot.

If we take desalinization of sea water (salt water) for example. Sea water contains water molecules and salt molecules in a mixture. Pure water can be separated from the salt by passing the sea water through a very fine mesh at high pressure. The mesh acts like a sieve and does not let the salt molecules pass through, trapping them on one side and leaving pure water on the other side. This is called a reverse osmosis filter and is an example of separating two constituent molecules (compounds) from a mixture.

Separating water molecules themselves into their constituent atoms/molecules, however, does require bonds to be broken. In water the hydrogen and oxygen atoms are covalently bonded together. In order to separate them we must break these bonds and the application of energy through the process of electrolysis can achieve this. The result yields hydrogen gas at one electrode and oxygen gas at the other.

Notably, separating mixtures or compounds into their constituents requires energy in some form.

The phase is Waning Crescent phase.

From ideal gas formula PV=nRT, we can conclude that the pressure is influenced by the number of moles of the gas. When the gas is mixed, partial pressure of a gas is determined by the total pressure and percentage of mol of the gas. A gas with higher percentage will result inhigher partial pressure.
So, the partial pressure of the neon would be:105 mmHg* 68%= 71.4mmHg

The correct answer is:

A.) provides the chemical functioning on genetic material that enables life, growth, and reproduction.

Hope this is correct because i did the test.

Know the ideal gas law equation?

PV = nRT

If you decrease P while keeping everything else constant, V increases. They are inversely related.
P = 1/V
The first answer is correct.

Answer:

Decreasing the pressure on the gas.

Explanation:

The answer is: They have no freedom to move.
However is not completely true, as even in a solid atoms still a move a bit (vibrations).

If atoms were able to slide past each other, then we would have a liquid not a solid. Liquids "flow" but never really "break apart" this is because atoms are sliding between them, think of these as a bucket of marbles rolling down a slope.

If they are free to move in all directions, then you have a gas; that's why someone uses perfume in a room, eventually everyone smells it.

Answer:

they have no freedom to move

Explanation:

Answer: a. water cycle

Explanation:

A water cycle can be define as the cycle of water in which water in various states like solid, liquid and gaseous forms circulates in different spheres of the earth. It describes how water evaporates from the surface of earth, the water vapors accumulate in the atmosphere, these water vapors become cool and condense in the form of rain or other kind of precipitations. The water cycle plays an important role in changing the weather condition of a region.

Answer:

its describing evaperation but evaperation is in the water cycle so its water cycle.

Explanation:

Answer:

56 L of

Explanation:

To solve this question the first step will be to verify that the chemical equation is balanced. As this equation is balanced we can proceed with the following steps:

1) To get the liter of oxygen gas to be collected we can employ the formula: pV=nRT where:

a) p= Pressure (1 atm at STP (Standard Preassure and Temperature)

b)V= volume (in litters)

c) n= number of moles

d) R= The gas constant that for STP conditions is 0.082 L atm mol K

e) T=temperature (273.5 K for STP conditions)

From this formula we can get the number of litters by: V=

To calculate the number of moles we have that 2 moles of equal on mole of . From the question we have that 90 grams o water are used for this reaction. To pass from grams to moles we can use the molecular weight, which for water is 18. Therefore,

The number of moles of water= 90grams x( = 5 moles of . We know that 2 moles of water equal one mole of oxygen gas, for this, 5 moles of water equal 2.5 moles of oxygen gas.

With the number of moles of oxygen gas calculated, we can substitute all the elements in the formula of the ideal gas to obtain the number of liters:

V = ; therefore,

V= 56.0 L of

2H2O -> 2H2 + O2
Stoichiometric ratio:
2 : 2 : 1

H2O: O2
2 : 1

Mass of 1 mol of H2O = [(2 x 1) + 16] g = 18g

18g of H2O = 1 mol of H2O
90g of H2O = 90g x 1 mol / 18g
= 5 mol of H2O

2 mol of H2O : 1 mol of O2
5 mol of H2O : 5/2 mol of O2

1 mol of O2 = 22.4 L of O2
5/2 mol of O2 = 5/2 mol x 22.4 L / 1 mol
= 56 L of O2

Answer:

washing machine

Explanation:

just took test

Answer: Kelvin

Explanation:

Temperature of the gas is defined as the degree of hotness or coldness of a body. It is expressed in units like and

These units of temperature are inter convertible.

As we know that there are seven fundamental SI units which are used to fine derived units . They are listed as:

1). Mass - Kilogram

2). Length - meter

3). Time - Seconds

4). Electric Current - Ampere

5). Amount of substance - Moles

6). Intensity of light - Candela

7). Temperature - Kelvin

Thus SI base unit of temperature is Kelvin.

In polar covalent bond two different type of electrons share electrons but in non polar covalent bond two same type of atoms share equal number of electrons
examples of non polar covalent bonds are cl2,n2,o2
examples of polar covalent bond iswter molecule H2O

Most fruits, like oranges, lemons, limes, etc. contain citric Acid. So...tell them to stay away from that stuff.

I believe milk contains lactic Acid, I.e. lactose/lactate. That could probably be avoided. (Although, the amount may not be high enough to be relevant)

There’s no telling how many other foods contain Acid.

Explanation:

Atomic number of calcium is 20 and its electronic distribution is 2, 8, 8, 2. When an atom has a positive charge then it means the atom has lost some electrons.

And, if an atom has a negative charge then it means an atom has gained some electrons.

For example, has one positive charge which means one electron has been lost by the calcium atom.

Hence, total number of electrons present in are 19 and its electronic configuration will be .

Thus, we can conclude that there are 7 s electrons present in .

The electron configuration of Ca is

1s2 2s2 2p6 3s2 3p6 4s2

So, since Ca+ has a positive charge, we know it has one less electron. Therefore the electron configuration is

1s2 2s2 2p6 3s2 3p6 4s1

You can take it from there. Just count the numbers next to each s and add them up

Hi.

From the knowledge I have left of biology, I have to go with D. Decomposers

Hope this helps!