1; The change of matter from a solid state to a gas state

1 answer:

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1 The change of matter from a solid state to a gas state is called sublimation.

2. When a solute is completely dissolved in a solvent, a solution is formed. (A)

3. Base are used in Used in ammonia, Alka-Seltzer, and dish soap

4. TRUE . Simple devices lower the required input force.

5. FALSE. It's the opposite.

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g Select the correct statements. I. Reduction is the loss of electrons, and oxidation is the gain of electrons II. Reduction is

Karolina [17]

Answer: The correct answer is Option D.

Explanation:

Reduction reaction is defined as the reaction in which a substance gains electrons. Here, the oxidation state of the substance decreases.

$X^{n+}+ne^-\rightarrow X$

Oxidizing agents are the agents that helps in the oxidation of other substance and itself gets reduced. These agents undergoes reduction reactions.

Oxidation reaction is defined as the reaction in which a substance looses its electrons. Here, oxidation state of the substance increases.

$X\rightarrow X^{n+}+ne^-$

Reducing agents are the agents that helps in the reduction of the other substance and itself gets oxidized. These agents undergoes reduction reactions.

Oxidation state is the number which is given to an atom when it looses or gains electron. It is written as a superscript. In a compound, the total charge is equal to the sum of the charges of all atoms in that compound. For Example: In $MnO_4^-$ , manganese has +7 oxidation number and oxygen has -2.

So, the charge on the compound = $[=7+(4\times (-2))]=-1$

Hence, the correct answer is Option D.

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3 years ago

PLEASE HELP ME ASAP PLEASE!

liberstina [14]

Answer:

the equation is balanced because there are 8 atoms of carbon, 26 atoms of oxygen, and 20 atoms of hydrogen. on each side of the equation.

PLEASE MARK BRAINLIEST

8 0

1 year ago

What is a property that describes how easily a substance undergoes chemical changes?

dedylja [7]

Reactants are the substances that undergo changes and the new substance created from it is called products.

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2 years ago

How can i find the number of neutrons in an element

lawyer [7]

Answer:

The mass number is the sum of protons and neutrons. This means to find the number of neutrons you subtract the number of protons from the mass number. On the periodic table, the atomic number is the number of protons, and the atomic mass is the mass number.

Explanation:

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Even though cities may be located at approfimately the same latitude, why might the

Reil [10]

C. Warm ocean currents bring warmer temperatures to coastal cities

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