A. chlorine
B. sulfur
C. oxygen
D. none of these​

Answer:B is right

Explanation: Al loses electrons and is oxidised, Au gains electron. And is reduced

To solve such this we must know the concept of half cell reaction. Therefore, the correct option is option B that is  Al(s) → A1³⁺(aq) + 3e and  Au(aq) + e [tex]\rightarrow[/tex]Au(s)

Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.

Oxidation is loss of electrons and reduction is gain of electrons. The electron transfer from oxidant to reductant. Al loses electrons and is oxidized, Au gains electron. And is reduced.

Therefore, the correct option is option B that is  Al(s) → A1³⁺(aq) + 3e and Au(aq) + e [tex]\rightarrow[/tex]Au(s)

Learn more about the chemical reactions, here:

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Answer:

Its C.

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Answer:

Person above is correct

The answer is C

Explanation:

Answer:

C I'm pretty sure

Explanation:

uhhhhhhhhh yes

Answer:

Thats the periodic table of elements

Explanation:

Answer:

c. completely dissolved

Explanation:

Since, the boulder is at rest. This means that there is an equilibrium of forces acting on the boulder.

According to principle of equilibrium of forces a body can be in position of rest only when net force acting on body is zero for translation equilibrium and net moment acting on the body must also be zero for rotational equilibrium.

Therefore, net forces and net moment acting on the boulder is zero.

Answer:

A. Oxygen is an element because its most basic unit is a single type of atom.

Explanation:

Oxygen is the chemical element with the symbol O and atomic number 8.

Answer:

Explanation:

Mide 2mL de etanol, añadelo a un matraz aforado, pon agua hasta llegar a 100mL

Answer:

D. 5.0

Explanation:

Step 1: Write the balanced equation at equilibrium

2 NO₂(g) ⇄ N₂O₄(g)

Step 2: Calculate the concentration equilibrium constant

The concentration equilibrium constant (Kc) is equal to the product of the concentrations of the products raised to their stoichiometric coefficients divided by the product of the concentrations of the reactants raised to their stoichiometric coefficients.

Kc = [N₂O₄]/[NO₂]² = 0.2 / 0.2² = 5

Answer:

a) the atomic number is 15

b) the mass number is 15+16 = 31

c) element is phosphorus

d)Group 15 period 3

Answer:

Ammonium lauryl sulfate, like any other surfactant, makes a good base for cleansers because of the way it disrupts the hydrogen bonding in water. Hydrogen bonding is the primary contributor to the high surface tension of water. In hydrogen bonding with the water surrounding them.

Answer:

2.75M

Explanation:

Concentration(M)= mol/volume

0.0688mol/0.250L

=0.2752M

Answer:

1. (put in simpler words so no one knows you got it off of brainly)

The electricity that flows to our homes is generated in power stations. From here, it flows through large transmission lines, which carry it to substations. Finally, distribution lines carry electricity from substations to houses, businesses, and schools.

2.  (put in simpler words so no one knows you got it off of brainly)

The transmission over long distances creates power losses. The major part of the energy losses comes from Joule effect in transformers and power lines. The energy is lost as heat in the conductors. This can be minimized by

answer choice 1: reducing technical losses including: replacing incorrectly sized transformers, improving the connection quality of conductors (power lines), and increasing the availability of reactive power by installing capacitor banks along transmission lines.

answer choice 2: (just in case answer choice 1 isn't what you're looking for)

You can reduce losses in your home by spreading out your electricity use evenly throughout the day, instead of running all your appliances at once.

Explanation:

hope this helped <3

Explanation:

acid, HNO3

base, KOH

salt ,KNO3

Answer:

15.5g

Explanation:

your welcome

Answer:

C)Electrons

Explanation:

Hope this helped!!!

1.42x10^24 molecules

40.0 grams NH3 (6.02x10^23/17.0 grams NH3)= 1.42x10^24 molecules

Answer:

we can conclude that there are 0.55 moles in 22 grams of argon.

Answer:

D. Paper D, paper C, paper A, paper B

Explanation:

Please check the attached image for a diagram showing clearly the pH colour chart

pH measures how acidic or alkaline a solution is. The pH scale ranges from 1 - 14

Solutions with a pH less than 7 are acidic

Solutions with a pH equal to 7 are neutral

In the image, test papers D and C occur on the left, thus, they are acidic

Solutions with a pH greater than 7 are alkaline

pH test papers are used to test to test how acidic or alkaline a solution is

Answer:

The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles KNO3, or 101.1032 grams.

Answer:

Heterogeneous mixture.

(The composition is not uniform.)

Answer: Fractional distillation is used to separate liquids with differing boiling points

Explanation:

Sublimation is used to separate volatile substance from a non volatile substance where volatile substance gets converted from solid to gas.

Fractional distillation is separation of a liquid mixture into fractions which differ in boiling points by means of distillation by use of a fractionating column.

Chromatography is a separation method where different rates of adsortion of different components is used to separate substances.

Answer:

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\[/tex]

We have

[tex]density = \frac{204}{17} \\ = 12[/tex]

We have the final answer as

Hope this helps you