Identify the type of reaction in KBrO3(s)  KBr(s)
+ O2(g)

Answers

Answer 1

Answer: I had this question in chemistry, and i'm sure it's a decomposition reaction.

Answer 2

Answer: I believe an oxidation reaction is occurring

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Which type of bond is between magnesium and oxygen?

Answers

Ionic bonding , because magnesium is a metal and oxygen is a non-metal .

Hydrocarbons are separated from each other by a process called cracking distillation. a. True
b. False

Answers

True, cracking distillation is one process used to break hydrocarbons into smaller and more useful parts. This is achieved by using high temperatures and pressures with a catalyst. The most common catalyst used are the zeolites.

Answer:

Correct answer is FALSE I just tested it and it came out right.

Explanation:

A compound is broken down by chemical means during (1) chromatography
(2) distillation
(3) electrolysis
(4) filtration

Answers

Answer : Option 3) Electrolysis.

Explanation : In the process of electrolysis, decomposition of the chemical is done by passing the electric current from the liquid or the solution containing ions in it. This is the process where compound is broken into ions namely, cations and anions.

Rest all options does not involves chemical decomposition of the compound.

Chromatography is a technique where rates of solute and solvent are compared in a medium where the solute components move at different rates and the separation is obtained.

Distillation simply purifies the liquid or solution by heating or cooling process.

Filtration just involves removal of impurities by using a more porous material device to get purified compound.

Answer:

The correct answer is option (3).

Explanation:

Electrolysis is defined as chemical process in which decomposition is carried out by passing an electricity in a solution containing ions. For example: electrical decomposition of water gives oxygen gas and hydrogen gas.

$2H_2O(l)\overset{Electricity}\rightarrow 2H_2(g)+O_2(g)$

where as chromatography, distillation and filtration are the separation techniques used to separate the compounds from the mixtures.

Hence, the correct answer is option (3).

Which elements can react to produce a molecular compound?(1) calcium and chlorine
(2) hydrogen and sulfur
(3) lithium and fluorine
(4) magnesium and oxygen

Answers

The elements that can react to produce a molecular compound is hydrogen and sulfur

Explanation

A molecular compound is formed when two or more atoms join by sharing electrons through a covalent bond.

Sharing of atoms occurs mainly between non metals.

Hydrogen ( a non metal) and sulfur(a non metal) react to form a molecular compound by sharing electron among themselves.
2 hydrogen atom bond with 1 atom sulfur to form hydrogen sulfide.

$\boxed{\left( 3 \right){\text{ Hydrogen and sulfur}}}$ can react to produce a molecular compound.

Further Explanation:

Covalent or molecular bond is formed when two or more non-metals share electrons between them. Such electron pairs are called bonding or shared pairs. The compounds formed as a result of these bonds are called covalent or molecular compounds.

Covalent bonds can be a polar covalent or nonpolar covalent bond. The bonds formed as a result of electron sharing between the atoms having some electronegativity difference between them are polar covalent bonds. HCl shows such type of bonding in it. The bonds formed when electrons are shared between the bonded atoms and these have no or slight difference in their electronegativities are called nonpolar covalent bonds. The bonds present in a $\text{CH}_4$ molecule are nonpolar covalent bonds.

Another type of bonding that occurs due to the complete transfer of electrons from one atom to the other is called ionic bonding. Such a process includes the formation of charged species called ions. Ions can have positive or negative charges on them. The charged species having a positive charge are cations while those having negative charges are anions.

(1) Calcium and chlorine

Calcium belongs to group 2A of the periodic table and is highly electropositive in nature. So it loses two electrons and forms $\text{Ca}^(2+)$ . Chlorine is highly electronegative in nature so two chlorine atoms accept the electrons donated by calcium and forms $\text{Cl}^-$ ions. Therefore $\text{CaCl}_2$ is formed which is an ionic compound.

(2) Hydrogen and sulfur

Both these atoms are nonmetals. So they share electrons with each other and as a result, a covalent or molecular compound is formed.

(3) Lithium and fluorine

Lithium belongs to group 1A of the periodic table and is highly electropositive in nature. So it loses an electron to form $\text{Li}^+$ . Fluorine is highly electronegative in nature and therefore it accepts the electrons donated by lithium and forms $\text{F}^-$ . Therefore LiF is formed which is an ionic compound.

(4) Magnesium and oxygen

Magnesium belongs to group 2A of the periodic table and is highly electropositive in nature. So it loses two electrons and forms ${\text{M}}{{\text{g}}^(2 + )}$ . Oxygen is highly electronegative in nature so it accepts the electrons donated by magnesium and forms ${{\text{O}}^(2 - )}$ . This results in the formation of MgO which is an ionic compound.

Therefore a molecular compound is formed when hydrogen and sulfur react with each other.

Learn more:

What is a typical characteristic of an ionic compound? brainly.com/question/6071838
What type of bond exists between phosphorus and chlorine? brainly.com/question/81715

Answer details:

Grade: High School

Chapter: Ionic and covalent compounds

Subject: Chemistry

Keywords: covalent bond, molecular bond, cations, anions, calcium, chlorine, hydrogen, sulfur, lithium, fluorine, magnesium, oxygen, molecular compound, ionic compound.

Which elements does it take to spell "nerds" using the chemical symbols on the Periodic Table of Elements?A.
Nitrogen, einsteinium, radon, sulfur
B.
Neon, rubidium, dysprosium
C.
Nitrogen, erbium, darmstadtium
D.
Nickel, einsteinium, ruthenium, silicon

Answers

If we looks at the elements and the periodic table . A is correct because Nitrogen is N , Ensteinium is E, Radon is RN, and lastly S is sulfer.

I hope this helps you! :)

Infrequent participation in physical activity can lead toa. high blood pressure during exercise
b. muscle strain and soreness after exercise
c. extra calories burned during exercise
d. low heart rate after exercise

Answers

We can see here that infrequent participation in physical activity can lead to: b. muscle strain and soreness after exercise

What is physical activity?

Infrequent participation in physical activity can lead to muscle strain and soreness after exercise. When individuals are not regularly engaged in physical activity, their muscles may not be conditioned or accustomed to the stress and demands placed on them during exercise. As a result, they may experience muscle strain, micro-tears in the muscle fibers, and delayed-onset muscle soreness (DOMS) following physical activity.

It's worth mentioning that leading a sedentary lifestyle, which involves minimal physical activity overall, can have broader health implications beyond muscle strain and soreness.

Learn more about physical activity on brainly.com/question/13490156

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