Complete the following nuclear equation.

Answer:

18 electrons

Explanation:

Depending on the chemical, these longer-term health effects might include:

Answer:

MIXTURE , ELEMENT AND SUBSTANCE

Answer:

They're called free electrons.

The particle Y marked in the given diagram is electron and surrounding circles indicates metal atom or ions. Free electrons in metal lattice locates at the interstices of the crystal.

Metals are electron rich elements exhibit higher thermal electrical conductivity. Metals are a pool of ions or electrons and therefore they form bonds with electronegative elements by donating electrons.

The interstitial sites of metal crystal lattice are occupied with free electrons and they can be transited to another sites or can be excited to get conductivity.

The electron transition from interstices provide the metal lattice some colors. The region from which an electron is transited is called F-center.

Therefore, the particle Y shown in the interstices of the metal lattice is electron.

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Answer:

evaporate

Explanation:

after water or any other solvent has mixed with satt stirr the mixture then heat it the water will evaporate leaving the solute (salt) behind

Answer:

NICE

Explanation:

TOES

Ca(s) + 2H2O(l) = Ca(OH) 2(aq) + 2H2(g)

The gas K collected is hydrogen gas.

The solution after the experiment is found to be weak base because Ca(OH)2 is sparingly soluble in water forming a weak base.

Answer:

A is the correct answer

Answer:

A. The electrons farthest from the nucleus of the atom

Explanation:

Answer:

yes this is I think a true statement

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Answer:

A:UNDERSTANDING CONCEPTS PART A 13) Which of the following is an example of periodicity? A) eating breakfast

Answer:  

Graduated cylinder

Explanation:

A graduated cylinder is used routinely for measuring volume and is considered more accurate than a beaker because of the permanently-marked incremental graduations incorporated in the clear cylinder.

PLS MARK BRAINLIEST

The enthalpy change for reaction (2) is 10178 kJ/mol.

The term enthalpy of reaction has to do with the heat that is evolved or absobed in a chemical reaction.

We have the equations;

We can see that equation (2) is obtained from (1) by multiplication using a factor of 2. and also (2) is a reverse of (1). It then follows that the enthalpy change for reaction (2) is 10178 kJ/mol.

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Answer:

10,148 kJ

Explanation:

Answer: 1.45M

Explanation:

The definition of molarity is moles/liter.  The neutralization of NaOH with HI is:

HI + NaOH = NaI  + H2O

One mole of HI reacts with 1 mole of NaOH.  We'll assume this is a titration reaction and that the 10.00ml sample of NaOH contains the same number of moles as the 56.75ml of 0.256M HI.

Moles HI:  (0.256 moles/liter)*(0.05675 L) = 0.01453 moles HI

That means we muct have 0.01453 moles NaOH in 10.0ml of NaOH solution.

(0.01453 moles NaOH)/(0.010L) = 1.45 M

==

Another approach is to use the relationship M1V1 = M2V2, which is useful for titrations (M is concentration and V is volume):

We want M2, so rearrange:  M2 = M1V1/V2

M2 = (0.256M)*(56.75ml)/(10.0ml)

M2 = 1.45M

Answer:

0.7 moles of Chlorine gas is required.

Explanation:

The reaction is balanced as follows:

2Na + [tex]Cl_{2}[/tex] ------>  2NaCl

According to stoichiometry,

2 mole Sodium reacts with 1 mole Chlorine gas

∴1 mole Sodium reacts with 1/2 moles of Chlorine gas

∴1.4 mole sodium reacts with 1.4/2 moles of Chlorine gas

                                                = 0.7 moles of Chlorine gas

So, 0.7 moles of Chlorine gas is required.

Answer:

i’m sorry i don’t know

Explanation:

Answer:

A chemical property is a characteristic of a particular substance that can be observed in a chemical reaction. Some major chemical properties include flammability, toxicity, heat of combustion, pH value, rate of radioactive decay, and chemical stability.

The element which larger species in each pair are Sr ,N3-, Ni, S2-.

A chemical element is a species of atoms, including the pure substance made entirely of that species, that have a specific number of protons in their nuclei. Chemical elements, in contrast to chemical compounds, cannot be reduced by any chemical process into simpler molecules.

A substance made up of only one kind of atom, all of which have the same number of protons, is said to be an element. One famous illustration is pure gold. A ring constructed of pure gold would be composed of countless millions of atoms, each with the same atomic number and 79 protons in its nucleus.

The three categories of elements are metal, non-metal, and metalloid. Metals like sodium, calcium, caesium, and other elements on the extreme left of the periodic table are examples of this.

Thus, The element which larger species in each pair are Sr ,N3-, Ni, S2-.

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Answer:

B.

Explanation:

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Answer:

The dark moths were now better camouflaged. As a result, dark moths had a greater chance of reproducing and passing on the alleles that made them dark. This led to a gradual increase in the proportion of dark moths until light moths became very rare in industrial areas. The moth populations in these areas had evolved.

The evolution of the peppered moth is an evolutionary instance of directional colour change in the moth population as a consequence of air pollution during the Industrial Revolution. The frequency of dark-coloured moths increased at that time, an example of industrial melanism.

Answer:

AQUACULTURE

*Explanation*

Aquaculture is the controlled process of cultivating aquatic organisms, especially for human consumption. It's a similar concept to agriculture, but with fish instead of plants or livestock. Aquaculture is also referred to as fish farming.

Los principales mecanismos de contaminación en el medio ambiente son los procesos industriales que implica combustión,tanto en industrias como automóviles o calefacciones residenciales,que generan dióxido y monóxido de carbono, óxidos de nitrógeno y azufre,entre otros contaminantes.

Answer:

physical properties are examples of irreversibilities

and chemical properties are example of reverse abilities.

Answer: liquid boiling is a reversable chemical change.

Explanation: you can alter the temperature to prevent it from boiling

Answer:

chưa hiểu đáp ánkia cho lắm. Nhưng đáp án là ZnO nha

Explanation:

Answer:

protons=15

electron=15

neutron=16

Answer: 1900

Explanation:

I’m not sure but in 1900 98% of the moths were dark