please answer this questions soon

i will mark him or her brillient
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Explanation:

Desposition of solid matter in a solution

Answer:

2KMnO₄ (aq) + 10KBr (aq) + 8H₂SO₄ (aq) -> 2MnSO₄ (aq) + 5Br₂ (aq) + 6K₂SO₄ (aq) + 8H₂O (l)

oxidizing agent = KMnO₄

reducing agent = KBr

Explanation:

KMnO₄ -> 2Mn⁷⁺ + 10e⁻ = 2Mn²⁺

KBr -> 10Br⁻⁺ - 10e⁻ = 10Br⁰

Answer:

atom is electrically neutral because

the no.of protons is equal to no.of

electrons.

Therefore the negative charge and

positive charge cancels out.

Answer:

The molar mass of C6 H12 O6 is 180.15588 g/mol.

Explanation:

Answer:

2.03 atm

Explanation:

Number of moles of He = 1g/4g/mol = 0.25 moles

Number of moles of F2 = 14.0g/38 g/mol = 0.37 moles

Number of moles of Ar=19.0g/40g/mol = 0.48 moles

Total number of moles = 0.25 + 0.37 + 0.48 = 1.1 moles

From;

PV=nRT

P= pressure of the gas mixture

V= volume of the gas mixture

n= total number of moles of the gas mixture

R= gas constant

T= temperature of the gas mixture

P= nRT/V

P= 1.1 × 0.082 × 293/13

P= 2.03 atm

Answer:

H2O

Explanation:

it is composed of 2 atoms of Hidro and 1 atom Oxy

Answer:

The chemical formula for water is H2O..it is composed by the bonding of 2 molecules of hydrogen and one molecule of oxygen,a covalent bond to be specific.

I hope this helps

Answer:

chlorine Will be at highest

Answer:

First you have to write the chemical equation

Fe + Hcl----->FeCl2 + H

to balance this equation you have to put a 2 in front of hydrochloric acid and hydrogen

Fe + 2Hcl----->FeCl2 + 2H

I hope this helps

Answer:

I hope the above link will be of help

Complete Question

A guest orders a drink that contains 4 1/2 ounces of 80-proof liquor. Approximately how many drinks does this beverage contain?

Answer:

[tex]No\ of\ drinks =3[/tex]

Explanation:

From the question we are told that:

Ordered drink 4 1/2 ounces of 80-proof liquor

Generally

80-proof liquor contains 40\% alcohol

Giving the drink a standard 1.5 ounce of distilled spirit

Therefore

[tex]No\ of\ drinks =\frac{4.5}{1.5}[/tex]

[tex]No\ of\ drinks =3[/tex]

Answer:

1.26 g

Explanation:

Number of moles of ascorbic acid = concentration × volume

Concentration = 0.447 M

Volume = 16.00 mL

Number of moles = 0.447 × 16/1000

Number of moles = 7.152 × 10^-3 moles

Number of moles= mass/molar mass

Molar mass of ascorbic acid = 176.1 g/mol

Mass = 7.152 × 10^-3 moles × 176.1 g/mol

Mass = 1.26 g

Na2CO3+2HCl⟶2NaCl+H2O+CO2

Law of conservation of mass- It states that for any closed system, the mass of the system always remain constant over time, as mass of system cannot change. Therefore, (mass of Na2CO3+ mass of HCl) should be equal to (mass of residue + mass of CO2)

Mass of Na2CO3=4.2 g

Mass of HCl=10 g

Mass of residue =12 g

Mass of CO2=2.2 g

∴ Mass of Na2CO3+ Mass of HCl=14.2 g

and Mass of residue + Mass of CO2=14.2 g

Therefore, they follow law of conservation of mass.

Answer:

H2

Explanation:

It helps to remove the oxygen

Answer:

It is H2. hope it helps if not sorry

Answer:

31.98g/mol

Explanation:

Using Graham's law of diffusion, which states that the rate of diffusion of a gas is inversely proportional to the square root of its molecular mass (M). Rate of diffusion = volume/time.

Since both gas S and Q have equal volumes, we can calculate molecular mass of gas Q as follows:

tQ/tS = √mQ /√mS

Where:

tQ = time of diffusion of gas Q

tS = time of diffusion for gas S

mQ = molar mass of gas Q

mS = molar mass of gas S

According to the information provided in this question;

tQ = 240s

tS = 180s

mQ = ?

mS = 18g/mol

Using tQ/tS = √mQ /√mS

240/180 = √mQ / √18

1.333 = √mQ / √18

Square both sides

1.333² = mQ/18

1.78 = mQ/18

mQ = 18 × 1.78

mQ = 31.98g/mol

Molar mass of Q = 31.98g/mol

Answer:

Any substance that contains only one kind of an atom is known as an element. Because atoms cannot be created or destroyed in a chemical reaction, elements such as phosphorus (P4) or sulfur (S8) cannot be broken down into simpler substances by these reactions.

Example: Water decomposes into a mixture of hydrogen and oxygen when an electric current is passed through the liquid. Hydrogen and oxygen, on the other hand, cannot be decomposed into simpler substances. They are therefore the elementary, or simplest, chemical substances - elements.

Each element is represented by a unique symbol. The notation for each element can be found on the periodic table of elements.

The elements can be divided into three categories that have characteristic properties: metals, nonmetals, and semimetals. Most elements are metals, which are found on the left and toward the bottom of the periodic table. A handful of nonmetals are clustered in the upper right corner of the periodic table. The semimetals can be found along the dividing line between the metals and the nonmetals.

Explanation:

Answer:

A. N2(g) + 3H2(g) Right arrow. 2NH3(g)

B.C(s) + 2H2(g) Right arrow. CH4(g)

Explanation:

Answer:

a and b

Explanation:

second question

miultiplu second eq by 2

Answer:

B

Explanation:

because Mg is stronger than Al

Answer:

Nuclear energy is currently within almost every country becoming a growing source of energy use since it can provide a lot of energy within a short amount of time with little resources used to create it. It is quite possible that within the next few generations that nuclear energy could become a much larger source of energy within the United States. Although, many countries after the leak have resorted to other means of energy sources learning from the mistakes of Japan.

Hope this helps :)

Answer:

100 cm³

Explanation:

Hi there!

Subtract:

400 cm³ - 300 cm³

= 100 cm³

Therefore, the volume of the object is 100 cm³.

I hope this helps!

if you know what kind of chemical a reactant is, it can help you to quickly distinguish the chemical reaction.

Ex:

HCl + KOH <---> KCl + H2O

We can look at the reactants and identify that this reaction is an acid-base reaction because HCl is an acid (it gave a proton) and KOH is a base (it accepted the proton)

Answer:

Products

Explanation:

I just got it right.

Answer:

Iron and chlorine form an ionic compound whose formula is FeCl3. The name of this compound is iron (III) chloride or iron trichloride.

Explanation:

Iron (III) chloride or Iron trichloride is also known as ferric chloride, it is a common compound of iron in the +3 oxidation state. The anhydrous compound is a crystalline solid with a melting point of 307.6 °C.

Answer:

1.717

Explanation:

Answer:

C2H4 Ethylene

Explanation:

Hope it helps! :)

Answer:

Measurement is defined as the act of measuring or the size of something. An example of measurement means the use of a ruler to determine the length of a piece of paper. ... Extent, quality, or size as determined by measuring; dimension. A waist measurement of 32 inches.

Explanation:

The comparison o unknown quantity with known standard quantity is called measurement.

Answer:

A solution in which the maximum amount of solvent has been dissolved. Any more solute added will sit as crystals on the bottom of the container.

Explanation:

A solution in which the maximum amount of solvent has been dissolved. Any more solute added will sit as crystals on the bottom of the contain

er.

Answer:

line 3

Explanation:

let me know if you have any questions

Answer:

neutrons should be added with the protons

Answer:

salt and oil

water and salt

water and sugar

Explanation: