Pollution from many nations contributes to the Great Pacific Garbage Patch. true or false

Answers

Answer 1

Answer:

Answer: True

The great pacific garbage patch is a landfill of waste that is located between Hawaii and California. It is the biggest landfill in the world. This zone consists of large population of phytoplanktons and small fishes but it lacks large fishes and mammals. This zone is mainly occupied with plastics which floats over the surface of water. The eastern and western patch collectively called as the great pacific garbage patch. From the west coast the waste is discharged by the U.S and from the east coast the waste is discharged by the Japan.

Therefore, the statement pollution from many nations contributes to the Great Pacific Garbage Patch is true.

Answer 2

Answer: This would be true for the most part

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Which equation represents a single replacement reaction? Thanks!

Answers

B is a single replacement reaction because it contains an element and a compound reacting together to create a different element and a different compound. Basically one element gets replaced in the reaction thus a single replacement reaction

Final answer:

A single replacement reaction is a type of chemical reaction in which one element replaces another in a compound. A common example of this is when zinc replaces hydrogen in hydrochloric acid to create zinc chloride and hydrogen gas.

Explanation:

A single replacement reaction is a chemical reaction in which one element replaces another element in a compound. This type of reaction can be represented as follows: A + BC -> AC + B. In this equation, 'A' is the single element that replaces 'B' in the compound 'BC', forming the new compound 'AC' and releasing 'B' as a separate element.

For example, one common single replacement reaction occurs when zinc replaces hydrogen in hydrochloric acid to form zinc chloride and hydrogen gas. This reaction can be written as: Zn + 2HCl -> ZnCl2 + H2.

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The electron configuration 1sÆ 2sÆ2pÒ 3sÆ3pÒ represents which noble gas?

Answers

This noble gas is argon (Ar), because its third energy level is full.

The compound NaOH(s) dissolves in water to yield(1) hydroxide ions as the only negative ions
(2) hydroxide ions as the only positive ions
(3) hydronium ions as the only negative ions
(4) hydronium ions as the only positive ions

Answers

Answer: Option (1) is the correct answer.

Explanation:

Sodium hydroxide is a strong base and when it is dissolved in water it completely dissociates into ions.

The chemical equation for this dissociation is as follows.

$NaOH(s) + H_(2)O(l) \rightarrow Na^(+)(aq) + OH^(-)(aq)$

Therefore, we can see that sodium ions are the only positive ions and hydroxide ions are the only negative ions formed upon dissociation of NaOH in water.

Thus, we can conclude that the compound NaOH(s) dissolves in water to yield hydroxide ions as the only negative ions.

________, such as HCl(aq), produce hydrogen ions when dissolved in water. A) Arrhenius acids
B) Arrhenius bases
C) Brønsted-Lowry bases
D) Brønsted-Lowry acids

Answers

The correct answer is A. Arrhenius acids, such as HCl(aq), produce hydrogen ions when dissolved in water. According to Arrhenius, acids are compounds or ions that releases hydrogen (H+) ions in its aqueous form.

Which pair below describes isotopes of the same element? A) an atom with 6 protons and 8 neutrons - an atom with 8 protons and 6 neutrons
B) an atom with 6 protons and 6 neutrons - an atom with 6 protons and 7 neutrons
C) an atom with 8 protons and 8 neutrons - an atom with 7 protons and 8 neutrons
D) an atom with 7 protons and 6 neutrons - an atom with 6 protons and 6 neutrons

Answers

Answer: The correct answer is Option B.

Explanation:

Isotope is defined as the chemical specie which belong to the same element but differ in their molecular mass.

The isotopes have same atomic mass but differ in their mass numbers

Atomic number is defined as the number of protons or electrons that are present in a neutral atom.

Atomic number = number of protons = number of electrons

Mass number is defined as the sum of number of protons and neutrons that are present in an atom.

Mass number = Number of protons + Number of neutrons

Thus, isotopes of an element has same number of protons but they differ in the number of neutrons.

For Example: Chlorine has 2 isotopes, $_(17)^(35)\textrm{Cl}\text{ and }_(17)^(37)\textrm{Cl}$

In $_(17)^(35)\textrm{Cl}$ isotope:

Number of protons = 17

Number of neutrons = 35 - 17 = 18

In $_(17)^(37)\textrm{Cl}$ isotope:

Number of protons = 17

Number of neutrons = 37 - 17 = 20

Hence, the correct answer is Option B.

B because isotopes have the same number of protons but a different number of neutrons

"Enzymes help to achieve the equilibrium faster but cannot changethe thermodynamic
equilibrium constant. Why?"

Answers

Equilibrium constant Kc is defined as the concentration of products over reactants raised to the the powers of its respective molar ratios in of the balanced chemical reaction.
A catalyst by definition is a compound able to catalyse a reaction while being chemically unchanged in the process. The catalyst works by lowering the activation energy by providing an alternative pathway of lower activation energy.
The is no value in the equation whereby activation energy will affect the equilibrium constant.
To know the speed where the reaction reaches equilibrium we need to look at the rate equation also known as Arrhenius equation,
K= Ae^(-Ea/RT)
Here we can see with the lowering of Ea ( activation energy ) the rate constant rises causing the reaction to reach equilibrium quicker.

Final answer:

Enzymes cannot change the thermodynamic equilibrium constant of a reaction because they do not alter the free energy difference between the reactants and products.

Explanation:

Enzymes are biological catalysts that speed up chemical reactions by lowering the activation energy required for the reaction to occur. They achieve this by providing an alternative reaction pathway with a lower activation energy. However, enzymes cannot change the thermodynamic equilibrium constant of a reaction.

The thermodynamic equilibrium constant is a measure of the ratio of products to reactants at equilibrium. It is determined by the difference in free energy between the reactants and products. Enzymes, although they accelerate the rate at which equilibrium is reached, do not alter the free energy difference between the reactants and products. Therefore, they cannot change the equilibrium constant.

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Which of the following statements describes the process of deposition?A. Soil becomes rich through erosion allowing for ample plant growth. B. Minerals are deposited into the soil through erosion. C. The surface area of rocks decreases because of acid rain. D. Materials are transported through erosion and are dropped in another location.