Which participates in chemical reactions?electrons
protons
neutrons
gamma rays

Answers

Answer 1

Answer: I think the correct answer is electrons. All chemical reactions are dependent on the transfer of electrons. Other subatomic particles are located in the innermost portion of an atom and are bonded strongly with each other.

Answer 2

Answer:

Answer: Option (a) is the correct answer.

Explanation:

A chemical reaction is the reaction that involves gain and loss of electrons due to which there is formation of new compounds or products.

Foe example, $HCl + NaOH \rightarrow NaCl + H_(2)O$

That is, in chemical reactions change in oxidation state of reactants occur.

Hence, we can conclude that out of the given options electrons participates in chemical reactions.

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You have two bottles of water. One bottle is left outside in the sun for two hours. The other is left in an air-conditioned room for the same amount of time. What would you expect to observe after the two hours?The bottle left outside will have lower vapor pressure than the bottle from the room.

The bottle left outside will have the same vapor pressure as the bottle inside the room because they both contain water.

The bottle left outside will have higher vapor pressure than the bottle from the room.

No change to either bottle.

Answers

You have two bottles of water. One bottle is left outside in the sun for two hours. The other is left in an air-conditioned room for the same amount oftime. After 2 hours, I would expect that the bottle left outside will have higher vapor pressure than the bottle from the room.

What does the molecular formula of a compound describe?

Answers

Answer: Molecular Formulas. Molecular formulas are a compact chemical notation that describe the type and number of atoms in a single molecule of a compound. Identify the molecular formula of a compound given either its name or structural formula.

Explanation:

Which units express specific heat capacity?J/°C, J/K, cal/°C cal/K J
/(gi°C), J/(giK), cal/(gi°C), cal/(giK)
J, cal
°C, K

Answers

Answer : The correct option is $(J)/(g^oC),(J)/(gK),(cal)/(g^oC),(cal)/(gK)$ .

Explanation :

Specific heat capacity : It is defined as the amount of heat required to raise the temperature of one gram of substance by one degree Celsius.

Formula used :

$q=mc\Delta T\nc=(q)/(m\Delta T)$

where,

q = heat required

m = Mass

c = specific heat capacity

$\Delta T$ = change in temperature

The unit of heat are expressed in terms of Joules, calories.

The unit of temperature are expressed in terms of degree Celsius, kelvin.

It is expressed as $(J)/(g^oC),(J)/(gK),(cal)/(g^oC),(cal)/(gK)$ .

The units to express specific heat capacity are cal/K, cal/ $\rm ^\circ C$ , J/K, and J/ $\rm ^\circ C$ . Thus the correct option is A.

Specific heat can be defined as the amount of heat required to raise the temperature of 1 gram of a substance by 1 degree celsius.

The expression for specific heat has been,

heat = mass $*$ specific heat capacity $*$ change in temperature

Calorie or Joule = g $*$ specific heat $*$ K or $\rm ^\circ C$

Specific heat will be:

cal/k
cal/ $\rm ^\circ C$
J/ $\rm ^\circ C$
J/K

Thus, the units to express specific heat capacity are cal/K, cal/ $\rm ^\circ C$ , J/K, and J/ $\rm ^\circ C$ . Thus the correct option is A.

For more information about the specific heat capacity, refer to the link:

brainly.com/question/2530523

Our body needs iron. Certain foods are rich in iron and iron tablets are usually recommended by doctors. but neither the food nor tablets are hard like iron? Why?

Answers

If the food and the tablets would be hard then how will the body digest it

because it would not be possible to eat them if they would be hard

Highlight the basic points in Lewis and Langmuir theory of electrovalency

Answers

The correct answer for the question that is being presented above is this one: "Electrovalency is characterized with the transferring of one or more electrons from one atom to another together with the formation of ions and as well as the number of positive and negative charges.

The Lewis and Langmuir theory of electrovalency (and as well as Kossel's) is dealing with Ionic bonds.

Lewis: electron-pair sharing, octet rule, Lewis Symbols or StructureLangmuir: introduced term "covalent" bond, and popularized Lewis's ideas

The Lewis-Langmuir electron-pair or covalent bond is referred as the homopolar bond, where the complete transfer of electrons give rise to ionic, or electrovalent bond (1) through attraction of opposite charges.

A solution has a volume of 250 ml and contains 0.70 mol Nacl what is the molarity