The process of breaking down of a chemical compound into its elements by chemical means is called: a) Analysis b) Synthesis c) Cracking d) None of the above

Answers

Answer 1

Answer:

Answer:analysis

Explanation:

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Which of the following sets of characteristics describe what we know about the inner planets?Select one:
a. They are closest to the sun, have many moons, and include ring systems.
b. They are closest to the sun, have many moons, and include ring systems.
c. They have rocky surfaces, no rings, and few or no moons.
d. They have rocky surfaces, ring systems, and are larger in size.

Answers

The sets of characteristics describe what we know about the inner planets is that have rocky surfaces, no rings, and few or no moons. The answer is letter C. Also, they are smaller in sizes compared to the outer planets. The rest of the choices are characteristics of the outer planets.

Answer: The correct answer is Option c.

Explanation: There are 2 types of planets in Our Solar system:

1. Inner planets: There are 4 planets which are known as inner planets which are Mercury, Venus, Earth and Mars. These 4 planets lie close to Sun. These planets have rocky surfaces and have no ring system in them. The maximum number of moons in inner planets are 2. The orbital time of these planets is less than the outer planets.

2. Outer planets: There are 4 planets which are known as inner planets which are Jupiter, Saturn, Uranus and Neptune. These 4 planets lie far from the Sun. These planets have gaseous surfaces and have ring system in them. These planets have many number of moons as compared to the inner planets. The orbital time of these planets is more than the inner planets.

From the above information, the correct answer is option c.

An element has an atomic number of 30. How many protons and electrons are in a neutral atom of the element? A. 30 protons, 30 electrons B. 15 protons, 15 electrons C. 60 protons, 30 electrons D. 30 protons, 0 electrons

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Atomic number shows the number of protons in an atom's nucleus. If the atomic number is 30, then it has 30 protons. The question says it is neutral, so it must have the same amount of protons and electrons.

A is the correct answer based on this.

In the reaction 2H2 + O2-->2H2O how many hydrogen molecules are needed to produce two water molecules

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2 hydrogens per water molecule

Answer:

Explanation:

PLEASE HELPWhich conducts heat more efficiently- a solid, liquid or gas? Why is that (explain on molecular level)?

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Answer

solids conduct heat more efficiently ! basically their particles are more tightly packed and stay in that position, so the heat transfer by collision allows for the best conduction

Explanation:

hope this helps ! :)

Which pair of compounds are isomers?(1) NO2 and N2O4
(2) P2O5 and P4O10
(3) HCOOH and CH3COOH
(4) CH3OCH3 and C2H5OH

Answers

Answer: $CH_3OCH_3$ and $C_2H_5OH$

Explanation: The compounds having similar molecular formula but different arrangement of atoms or groups in space are called isomers and the phenomenon is called as isomerism.

$CH_3OCH_3$ and $C_2H_5OH$ are functional isomers which have same molecular formula but different functional groups attached.

(1) $NO_2$ and $N_2O_4$ are different compounds.

(2) $P_2O_5$ and $P_4O_(10)$ are different compounds.

(3) $HCOOH$ and $CH_3COOH$ are different compounds.

CH3OCH3 and C2H5OH are isomers. They have same molecular formula. But with another formation.

A similarity between the forces involved in both ionic and covalent bondingis that bothO A) involve the sharing of electrons.O B) involve the transfer of electrons.O C) involve the attraction of opposite charges.requre same amountof energy toereakther bonds

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Stating the difference between covalent and ionic bonding....

ionic bonds consist of the transfer of electrons, and covalent consists of the sharing of electrons.

This being said..answer choices A and B are out of the picture.

Thus, answer choice C is your answer.

Involve the attraction of opposite charges;require same amount of energy to break their bonds.

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