how does one know that khso5, the active reagent in oxone, is a strong oxidant?

Answer:

The colorless solution is an acid.

Answer:

nonpolar

Explanation:

A nonpolar solvent has the highest solubility with a nonpolar solute.

Answer:

Explanation:

I can help

Answer:

12.67g of Mg / 15.33g of MgO * 100% = 82.6% of Mg

Explanation:

Ionization energy increases as we move across the period from left to right.

order of ionization energy across period 2

Li < B < Be < C < O < N < F < Ne

What is Ionization energy?

Trends for Ionization energy

order of ionization energy across period 2

Li < B < Be < C < O < N < F < Ne

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Answer:

The higher the temperature, the more soluble most ionic solids are in water

As you cool a saturated solution from high temperature to low temperature, solids start to crystallize out of solution if you achieve a supersaturated solution.

If you raise the temperature of a saturated solution, you can (usually) add more solute and make the solution even more concentrated.

Explanation:

For many ionic solids, solubility in water increases with increase in the temperature of the solution.

This implies that increasing the temperature allow more solute to dissolve in the solvent, supersaturation may be achieved by so doing. As the solution is cooled, the solid crystalizes out of solution hence the answers above.

• Molar mass NH3 ,= Molmass of N + ( 3xmol.mass of H ) = ,17 g/mol

• Molar mass of O2, = 2 x Mol.mass of O = 2*16 = ,32 g/mol

• Mass of NH3 = 7.42 g

The balanced equation of the chemical reaction:

According to stoichemistry ,

• 4 moles of NH3 reacts with 5 moles of O2

• 4x17 g of NH3 reacts with 5x32 g of O2

• then , 7.42 g NH3 reacts with x mass of O2

Answer:

2-7

Explanation:

Answer:

B. The electronegativities of the two atoms are equal.

The statement is false. Sodium chloride (NaCl) does truly exist in the ocean. In fact, NaCl is the most abundant salt in seawater, making up approximately 85% of all dissolved salts.

The salt in seawater comes from the weathering of rocks on land, which release ions into rivers and ultimately into the ocean. As seawater evaporates, the concentration of NaCl and other salts increases, leading to the formation of salt deposits. Therefore, sodium chloride does truly exist in the ocean.

Sodium chloride (NaCl) is a compound, which means it is a combination of two or more elements. Sodium and chlorine are the two elements that make up sodium chloride. It's also known as table salt or simply salt.

NaCl, or table salt, is present in the oceans, lakes, and other natural bodies of water. It is discovered in huge quantities in seawater, which is roughly 3.5% salt by weight. It's also found in salt deposits underground or in shallow mining operations.

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Answer:

Chlorine atoms are smaller

Explanation:

Magnesium have more electrons than chlorine.

Answer: Chlorine

Explanation: Since chlorine's 17 protons are greater than magnesium's 12 protons, chlorine will have a greater effective nuclear charge to draw chlorine's valence electrons closer to the nucleus and, thus, chlorine is expected to have the smaller atomic radius, while magnesium with the lower effective nuclear charge is expected to have the larger atomic radius.

The magnitude of the concentration that LiOH(aq) employs to neutralize the reaction is 0.125 M.

\(M__{H_{2}SO_4 }\) = M₁ = 0,050 M

\(V__{H_{2}SO_4 }\) = V₁  = 20,0 ml

\(V__{LiOH }\) = V₂ = 8,00 ml

Thus, solving for the final morality is:

M₁V₁ = M₂V₂

M₂ = \(\frac{M_1V_1}{V_{2}}\)

So, plugging in the values we obtain:

M₂ =  \(\frac{0,050x20,0}{8,00}\)

M₂ = 1 : 8,00

M₂ = 0,125 M

Then the magnitude of the concentration that LiOH employs to neutralize the reaction is 0.125 M.

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Answer:

Fluorine    

Chlorine

Bromine

Iodine

Boiling point increases as you go down the group v11

Explanation:

The elements of Group VII  are the halogens consisting of f fluorine (F), chlorine (Cl), bromine (Br), iodine (I).  All of which are non metals and exists  as diatomic molecules - F2, Cl2, Br2, I2 with  intermolecular attractions between the two molecules of each element held by Van der Waals dispersion force.

Moving down the group, the size of the atoms increases in size from Fluorine, F2 and Chlorine, Cl2 which are gases to Bromine , Br2 which exists as a liquid to solid, Iodine, I2. This attributes to the increasing in Strength of the Van der Waals forces as you go down the group. In order to break the vanderwaals forces , More heat energy is required to change thier states  leading to the increase in  boiling point going down the group.

Fluorine    

Chlorine

Bromine

Iodine

Boiling point increases as you go down the group

Answer:

C. Period

Explanation:

The elements from this section of the periodic table belongs to the same period.

A period on the periodic table is a horizontal arrangement of elements according to their atomic number.

Answer:

See below

Explanation:

How many atoms are in grossular/Ca2AL2(SiO4)3

_2___ calcium atoms amount

__2__ Aluminum atoms amount

__3__ silicon atoms amount

__12__ Oxygen atoms amount

See attached worksheet

Answer:

Convection currents are flowing fluid that is moving because there is a temperature or density difference within the material.

Because particles within a solid are fixed in place, convection currents are seen only in gases and liquids. A temperature difference leads to an energy transfer from an area of higher energy to one of lower energy.

16

protons

18

neutrons

16

electrons

Right from the start, you know that you're indeed dealing with a neutral atom, since the number of protons it has in its nucleus is equal to the number of electrons it has surrounding its nucleus.

Now, an atom's atomic number,  

Z

, tells you how many protons it has in its nucleus. Nothing more, nothing less.

In your case, you are told that the atom contains  

16

protons in its nucleus, which means that  

Z

will be equal to

Z

=

16

A quick look in the periodic table will reveal that you're dealing with an atom of sulfur,  

S

.

An atom's mass number,  

A

, tells you how many protons and neutrons it contains in its nucleus. Since the number of protons is given by  

Z

, you can say that

A

=

Z

+

no. of neutrons

In your case, the atom contains  

18

neutrons in its nucleus. This means that  

A

will be equal to

A

=

16

+

18

=

34

Finally, focus on the atom's electron configuration, which you know that must account for a total of  

16

electrons.

S:  

1

s

2

2

s

2

2

p

6

3

s

2

3

p

4

Its noble gas shorthand notation, which uses the electron configuration of neon,  

Ne

, the noble gas that comes before sulfur in the periodic table, will look like this

S:  

[

Ne

]

3

s

2

3

p

4

Given 5 grams of H₂, 80 grams of CH₄ are produced by From the equation, we can see that for every 2 moles of CH₄, 1 mole of H2 is consumed.

To determine the amount of CH₄ produced from 5 grams of H₂, we need to consider the balanced chemical equation for the reaction between H₂ and CH₄. From the equation stoichiometry, we can calculate the stoichiometric ratio between H₂ and CH₄ and use it to find the mass of CH₄ produced.

The balanced chemical equation for the reaction between H₂ and CH₄ is:

H₂ + 2CH₄ → 4H₂ + C

To find the mass of CH₄ produced, we need to convert the mass of H2 to moles using its molar mass (2 g/mol) and then use the stoichiometric ratio to calculate the moles of CH₄ produced. The molar mass of CH₄ is 16 g/mol.

First, we convert the mass of H₂ to moles:

5 g H₂ * (1 mol H2 / 2 g H₂) = 2.5 mol H2

Since the stoichiometric ratio is 1:2 for H2 to CH₄, we have:

2.5 mol H₂ * (2 mol CH₄ / 1 mol H₂) = 5 mol CH₄

Finally, we convert the moles of CH₄ to grams:

5 mol CH₄ * (16 g CH₄ / 1 mol CH₄) = 80 g CH₄

Therefore, 5 grams of H₂ will produce 80 grams of CH₄.

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Answer:

C. 7.4 kJ

Explanation:

Let assume that Mercury is at room temperature (25 °C). The energy required to boil the sample of mercury is the sum of sensible and latent heats. Mercury has a fussion and boiling points of -38.83 °C and 356.7 °C, respectively, and a specific heat of \(138\,\frac{J}{kg\cdot ^{\circ}C}\). Then:

\(Q = (25\,g)\cdot \left[\left(0.138\,\frac{J}{g\cdot ^{\circ}C} \right)\cdot (356.7^{\circ}C - 25^{\circ}C) + 296\,\frac{J}{g} \right]\)

\(Q = 8544.365\,J\)

The option that offers the best approximation to the result is C.

Answer:

Option C

Explanation:

In Lewis dot structure the valence electrons are represented as dots around the symbol.

For example,

In hydrogen valence electron is only one it can be represented as,

H·

We know that in covalent bonding atoms share their electron to complete the octet. Thus, their Lewis dot structure would be represented as,

H:H

This is the Lewis dot structure of H₂.

In given atom X their are  2 valence electrons (3s²) thus its Lewis dot structure contain two dots around the symbol.

Option C is correct answer because it has only two dots which actually represent valence electrons.

Other options are incorrect because symbol X has more than two electrons/dots.

Answer:

The tissues decompose at a slower rate at lower temperatures.

Explanation:

This is my best guess but I think answer is tissue decompose slower rate at low temperature. This is why we in medicine we store specimens at very low temperature so we can do research on it at a later time but they eventually go bad. Low temperature slow down enzymes and proteins thus breakdown is slower rate.

Answer:

162.4

Explanation:

Because yea thats the answer no need to tell you why ok bye

Answer:

for the second one i'd go with reflection

Explanation:

Answer:

itsball wrong

Explanation:

beucaer

Answer:

frozen

Explanation:

I would say because when u freeze water it expands and denifys.

When silver nitrate (AgNO₃) reacts with sodium iodide (NaI), a precipitate forms. The precipitate that is produced in this reaction is silver iodide (AgI).

The reaction can be represented by the following balanced chemical equation:

2AgNO₃ + 2NaI → 2AgI + 2NaNO₃

In this equation, two moles of silver nitrate react with two moles of sodium iodide to yield two moles of silver iodide and two moles of sodium nitrate.

Silver iodide is a yellow, crystalline solid that is insoluble in water. The formation of a precipitate occurs because silver iodide has low solubility, meaning it does not readily dissolve in water. Instead, it separates out of the solution as a solid, forming a visible precipitate.

The reaction between silver nitrate and sodium iodide is a double displacement reaction. The silver ions (Ag+) from silver nitrate combine with the iodide ions (I-) from sodium iodide to form solid silver iodide (AgI). The sodium and nitrate ions remain in solution as sodium nitrate (NaNO3).

Precipitation reactions are commonly used in chemical analysis to identify the presence of specific ions in a solution. In this case, the formation of the yellow precipitate of silver iodide confirms the presence of iodide ions in the solution.

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Answer:

protons

Explanation:

The number of protons in the nucleus determines which element an atom is, while the number of electrons surrounding the nucleus determines which kind of reactions the atom will undergo.

Answer: Physics is about

how things move and why things move

Explanation: