An example of a decomposer is a:

rabbit
mushroom
tulip

Answers

Answer 1

Answer:

Answer:

mushroom

Explanation:

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Which elements combine by forming an ionic bondA) Sodium and potassium
B) Sodium and oxygen
C) carbon and oxygen
D) Carbon and sulfur

Answers

Answer:

B) Sodium and oxygen

Explanation:

Ionic bond: This type of bond is formed when there is a complete transfer of electrons from one element to another element. Ionic bond is the bond which is formed between the two oppositely charged ions and are held by the strong electrostatic attraction. This is formed between the atoms which have high differing electronegativities. In this bonding one element is always a metal and another is a non-metal.

Thus,

Out of the options, B involves a metal and a nonmetal which is sodium and oxygen respectively. Thus, they can form a ionic bond on combining.

A) represents 2 metals, C) and D) represents 2 nonmetals and thus, they cannot form an ionic bond.

Ionic bonds will always form between Non-Metals and Metals.

So the only NM + M is B

HI(aq)+KOH(aq)→H2O(l)+KI(aq) express this as a complete ionic equationHI(aq)+KOH(aq)→H2O(l)+KI(aq) express this as a complete ionic equation

Answers

The complete ionic equation is as follows: H+ $_(aq)$ + I $^-$ $_(aq)$ +K $^+$ $_(aq)$ +OH $^-$ $_(aq)$ $\rightarrow$ H₂O $_(l)$ +K $^+$ $_(aq)$ +I $^-$ $_(aq)$

What is ionic equation?

Ionic equation is defined as a chemical equation which represents electrolytes in aqueous solutions and are expressed as dissociated ions. Ions present in aqueous solutions are stabilized by ion dipole interactions with the water molecules which are present.

An ionic equation can be written for any electrolyte which dissociates and reacts with the polar solvent. In a balanced ionic equation , number and type of atoms on each sides of reaction arrow are same. Even the net charge on both sides of the arrow is same.

Strong acids and bases exist as dissociated ions present in the solution and are written in forms of ions in ionic equation.Weak acids and bases do not dissociate completely and hence are written in the form of molecular formula.

Learn more about ionic equations ,here:

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HI(aq) + KOH(aq) ---> H2O(l) + KI(aq)

H+(aq) + I-(aq) + K+(aq) + OH-(aq) ------> H2O(l) + K+(aq) + I-(aq)

H+(aq) + OH-(aq) ----> H2O(l)

Does sodium have a positive or negative charge after ionization?

Answers

Explanation:

Sodium has atomic number of 11 with electronic configuration of :

$[Na]=1s^22s^22p63s^1$

Sodium loose it single electron to attain stability of noble gas configuration. While this process electron gets removed from the outer shell of the sodium atom and it gains positive charge of +1.

$[Na^+]=1s^22s^22p63s^0$

$Na\rightarrow Na^++e^-$ (Ionization)

Sodium Chloride also known as table salt, the sodium has a positive charge and the chloride a negative so after ionization that leaves you with two negative charges because it takes the salt away. possibly disforming the atoms.

Which types of bond is formed between the two chlorine atoms in a chlorine molecule?

Answers

Answer: D - a nonpolar covalent bond

Explanation: because opposites attract?

They achieve stable structures by sharing their single, unpaired electron.

How do lungfish survie in intense heat

Answers

I believe they use Estivation

Defined: To spend a hot, dry season in an inactive, dormant state, as certain reptiles, snails, insects, and small mammals.

In the unit cell of galena, six square faces of equal size each form 90 degree angles with every adjacent face. What type of crystal system is this?tetragonal
hexagonal
triclinic
cubic

Answers

Answer : The correct option is, Cubic.

Explanation :

As there are seven types of crystal systems which are cubic, tetragonal, orthorhombic, monoclinic, triclinic, rhombohedral and hexagonal.

A unit cell is characterized by the axial length (a, b and c) and axial angle $(\alpha ,\beta ,\gamma )$ parameters which decide the size and shape of the unit cell.