can i have help with this ???

Answer:

Explanation:

Na₂S₂O₃ + 4Cl₂ + 5H₂O → 2NaHSO₄ + 8HCl.

                4 moles                               8 moles

4 moles of Cl₂ forms 8 moles of HCl

.25 moles of Cl₂ forms 8 x .25 / 4 moles of HCl

HCl formed = .50 moles .

E is the answer .

Answer:

Oxidation half-reaction : Na(s) → Na⁺ + 1 e-

Reduction half-reaction: Cl₂ + 2 e- → 2 Cl⁻

Explanation:

Oxidation half-reaction: solid sodium (Na(s)) has an oxidation number of 0. It loses 1 electron and forms the cation Na⁺. So, the half-reaction is the following:

Na(s) → Na⁺ + 1 e-

Reduction half-reaction: chlorine gas (Cl₂) has an oxidation number of 0. Each atom of Cl gains 1 electron to form two Cl⁻ ions, according to the following half-reaction:

Cl₂ + 2 e- → 2 Cl⁻

The total oxidation-reduction reaction is obtained by adding the oxidation half-reaction multiplied by 2 (to balance the electrons) and the reduction half-reaction, as follows:

2 x (Na(s) → Na⁺ + 1 e-)

Cl₂ + 2 e- → 2 Cl⁻

--------------------------------

2Na(s) + Cl₂ → 2NaCl

Answer:

The answer is false.

Explanation:

Precipitation is the process where water released from clouds in the form of rain, freezing rain, sleet, snow, or hail. It is the primary connection in the water cycle that provides for the delivery of atmospheric water to the Earth.

Answer:

Moving two particles of the opposite charge close together.

Explanation:

Think about it.

Opposites attract.

When you attempt to move particles with the same charges, a force is created.

Answer: i dont understand

Explanation:

Question

What is the name of this ben zene ?

the name of this benzene is benzene circle

if you also don't understand the go in this link

https://en.m.wikipedia.org/wiki/File:Benzene_circle.svg

plz give me brainliest+ thanks i need it to reach in expert : )

Answer:

solution A

Explanation:

it is because solution A has a pH of 2.0 and solution B has the pH of 5.0 and also whose number is greater than the solution A .That is why it is acidic

Answer:

yoooo si se puede jejeje

Explanation:

Answer:

Explanation:

hola como esta yo tan biene es  aburrido

Answer:

Outer electrons.

Explanation:

All bonds are localized bonds formed between two atoms by the donation of electrons from each atom.

Answer:

0.25M

Explanation:

acording to M1V1/M2V2=n1/n2

Answer:

D

Explanation:

Because the Earth rotates through two tidal “bulges” every lunar day, coastal areas experience two high and two low tides every 24 hours and 50 minutes!!!

Answer: D

Explanation:

I would say D, because it makes sense for the temperature to decrease with depth because less sunlight means less heat. I'm not sure about the salinity 100% but I think it increases.

(Don't mind me, answering it properly because brainly is being annoying)

Answer:

B

Explanation:

Answer:

b. to determine how fast

Explanation:

edg 22

Answer:

Explanation:

Na2O has 2 atoms of Sodium and 1 atom of Oxygen

So, the molecular mass of Na2O is:

(2 x Atomic weight of Na) + (1 x Atomic weight of O)

Atomic weight of Na = 22.99 g

Atomic weight of O = 16 g

Therefore, Molecular Mass of Na2O = (2x 22.99g) + (1 x 16g)

= (45.98 + 16)g = 61.98 g

Therefore 61.98 g of Na2O contains 6 x 10^23 molecules (Avogadro's number).

24.6 g of Na2O therefore contains:

(24.6/61.98) x 6 x 10^23 = Answer!

Answer:

B

Explanation:

Neutron, neutral subatomic particle that is a constituent of every atomic nucleus except ordinary hydrogen. It has no electric charge and a rest mass equal to 1.67493 × 10−27 kg—marginally greater than that of the proton but nearly 1,839 times greater than that of the electron.

Answer:

When chlorine water is added to potassium bromide solution, chlorine will displace the bromine from the salt solution. The chlorine will be REDUCED (gain electrons) to chlorine ions. The bromide ions will be OXIDISED (lose electrons) to become bromine. The bromine will turn the solution orange.

Explanation:

HAVE A GOOD DAY

Answer:

Mass of 1 litre of this gas at 273 degree Celsius and 1140 mm Hg pressure is

3 grams. So, (T1) = (273 + 273) degree Absolute = 546 degree Absolute and

(P1) = (760 + 1140) mm Hg = 1900 mm Hg and (V1) = 1 Litre

First, we have to find out how much volume does it occupy at NTP; (T2) = 273 degree Absolute and (P2) = 760 mm Hg.

So, (V2) = (1900*1 / 546)*(273 / 760) = 1.25 litre.

So, the mass of 1.25 litre volume of this gas = 3 grams

Therefore, the mass of 22.4 litre volume of this gas = (3*22.4 / 1.25) grams

= 53.76 grams.

So, the gram molecular mass of the gas is 53.76.

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Answer:

A common characteristic of most Alkali Metals is their ability to displace H2(g) from water. This is represented by their large, negative electrode potentials. In this event, the Group 1 metal is oxidized to its metal ion and water is reduced to form hydrogen gas and hydroxide ions. The general reaction of an alkali metal (M) with H2O (l) is given in the following equation:2M(s)+2H2O(l)⟶2M+(aq)+2OH−(aq)+H2(g)(1)

Explanation:

Answer:

pOH = 3.18

Explanation:

The equilibrium of a weak base as NX3 is:

NX3(aq) + H2O(l) ⇄ HNX3⁺(aq) + OH-(aq)

Where the equilibrium constant, Kb, is:

Kb = 2.5x10⁻⁶ = [HNX3⁺] [OH-] / [NX3]

As both HNX3⁺ and OH- ions comes from the same equilibrium, their concentrations are the same, that is:

[HNX3⁺] = X

[OH-] = X

And: [NX3] = 0.175M:

2.5x10⁻⁶ = [X] [X] / [0.175M]

4.375x10⁻⁷ = X²

X = 6.61x10⁻⁴M = [OH-]

As pOH = -log [OH-]

The substance which completely consumed in a chemical reaction are known as Limiting reagents. Hence, option (1) is the correct option.

It is the reactant in a chemical reaction that gets consumed first in a chemical reaction and therefore limits how much product can be formed, Thus, known as Limiting reagent.

Hence, The substance which completely consumed in a chemical reaction are known as Limiting reagents. Hence, option (1) is the correct option.

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D. 1-butyne.

The name of this molecule is 1-butyne.

The name of this molecule is 1-butyne. D is correct.

IUPAC nomenclature of organic chemistry is a method of naming organic chemical compounds as given by the International Union of Pure and Applied Chemistry (IUPAC).

There are 3 main parts of IUPAC nomenclature -

1. Prefix

2. Root word

3. Suffix

We have to select the longest continuous chain in a compound and give prefixes as the substituents. Root word will the part which depends on no. of carbon atoms such as meth or eth. And in suffix we focus on type of carbon chain whether it is saturated or not and also the functional group.

Here, we can say that the numbering will be started from the carbon having triple bond and it is present at first position.

Therefore, The name of this molecule is 1-butyne. D is correct.

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Answer:

D) Bees and plants or sea anemonies and clownfish.

i think..

Explanation:

A pearlfish spends the day inside the alimentary tract, or intestines, of a sea cucumber. The fish emerges from the sea cucumber at night to feed on small crustaceans. The pearlfish gets a safe place to live. The sea cucumber does not gain anything from the relationship, nor is it harmed. This is similar to the relationship between bees and plants or sea anemonies and clownship and the correct option is option D.

Symbiosis is a close relationship between two species in which at least one species benefits.

For the other species, the relationship may be positive, negative, or neutral.

There are three basic types of symbiosis: mutualism, commensalism, and parasitism.

Mutualism is a symbiotic relationship in which both species benefit. Commensalism is a symbiotic relationship in which one species benefits while the other species is not affected.

One species typically uses the other for a purpose other than food. Parasitism is a symbiotic relationship in which one species (the parasite) benefits while the other species (the host) is harmed.

Therefore, a pearlfish spends the day inside the alimentary tract, or intestines, of a sea cucumber. The fish emerges from the sea cucumber at night to feed on small crustaceans. The pearlfish gets a safe place to live. The sea cucumber does not gain anything from the relationship, nor is it harmed. This is similar to the relationship between bees and plants or sea anemonies and clownship and the correct option is option D.

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Answer:

a

Explanation:

The molecules of a substance formed a rigid repeating crystal structure. Then, a phase change occurred. That structure is now more like clusters of molecules moving past one another this change is caused by condensing phase.

The transformation of water vapor into liquid is known as condensation. The process is the opposite of evaporation, in which liquid water turns into a vapor. Either the air is chilled to its dew point or it gets too saturated with water vapor to retain any more water, causing condensation to occur.

By removing and transferring heat from the vapor to a cooling medium, condensation is the process by which a substance goes from its vapor phase to its liquid phase. The vapor must be saturated for the process to begin as well as having its vaporization heat reduced.

Thus, option A is correct.

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Answer:

Option 2: X is the screening constant, & it remains constant across a period.

Explanation:

I took the test and got the question correct :)

As we move across the period, X is the screening constant, and it remains constant across a period.

As we move across the period, the size of atoms become smaller because of an increase in the size of the nuclear charge. This leads to a decrease in atomic radius.

As the size of atom decreases, the screening effect on the outermost electron decreases accordingly. Hence, as we move across the period, X is the screening constant, and it remains constant across a period. This is because, no new shells are added across the period.

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Answer:

M

Explanation:

Hope it helped u alot

P. Cyanide is toxic to clover plants because they use cytochrome c oxidase for electron transport in the mitochondria.

The correct option is B.

Various bacteria, fungi, and algae have the ability to produce cyanides. Tapioca, spinach, willow shoots, almonds, string beans, fruit seeds, and car fumes are other items that contain cyanides.

Smoking cigarettes and the byproducts of the combustion of synthetic fibers, including plastics, contain cyanide. Combustion products are chemicals that are released while combustion. The paper production, textiles, and plastics all use cyanide. The chemicals used it to develop pictures include it. Unfortunately, cyanide is not like other materials. By utilizing this approach, you simply cannot develop a natural tolerance to cyanide.

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The complete question is -

Which statement describes the likely metabolic impact of cyanide

production on clover plants?

A-M. Cyanide is nontoxic to clover plants because they produce ATP without the electron transport in the mitochondria.

B-P. Cyanide is toxic to clover plants because they use cytochrome c oxidase for electron transport in the mitochondria.

C-R. Cyanide is toxic to clover plants because they use cytochrome c oxidase for ATP synthesis in the chloroplasts.

D-S. Cyanide is nontoxic to clover plants because they carry out electron

transport in chloroplasts rather than in mitochondria.