What amount of oxygen gas is needed to produce 2.85 mol of chlorine gas……
NEED HELP ASAP!
A) 0.95 mol
B) 1.90 mol
C) 2.85 mol
D) 5.70 mol
E) 8.55 mol

Answer:

When a number is written in scientific notation, the exponent tells you if the term is a large or a small number. A positive exponent indicates a large number and a negative exponent indicates a small number that is between 0 and 1.

Answer: Accroding to my calculations One time when I went to deny i got lost and I was very tired and hungry So i licked my ice cream then I found my parents and had fun I hope you enjoyed my answer

Explanation: Whdd

Answer:

1. 10 g / 100 g H₂O

2. 2 g / 100 g H₂O

Explanation:

Both questions ask about the solubility of cerium sulfate (Ce₂(SO₄)₃), meaning we need to focus on the dark blue line.

Answer:

where is the figure . u can simply add them

Answer:

The simplest ketone is acetone (R = R' = methyl), with the formula CH3COCH3

CH₃COCH represent a ketone.

Hence, Option (A) is correct answer.

A ketone is functional group which contains the carbonyl group that is -C = O. The structure for ketone is R¹ - C = O - R² where R¹ and R² are alkyl group or aryl group.

Now lets check all options one by one

Option (A): CH₃COCH

CH₃COCH contains the carbonyl group with alkyl/aryl group. So it represent a ketone.

So, it is correct option.

Option (B): C₂H₅COOCH₃

C₂H₅COOCH₃ contain a -COOR which is a functional group of ester. So it does not represent a ketone.

So, it is incorrect option.

Option (C): C₂H₅COOH

C₂H₅COOH contain carboxylic group. So it does not represent a ketone.

So, it is incorrect option.

Option (D): CH₃CHO

CH₃CHO contain aldehyde group. So it does not represent a ketone.

So, it is incorrect option.

Thus, from above conclusion we can say that CH₃COCH represent a ketone.

Hence, Option (A) is correct answer.

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Answer:

Neutrons are all identical to each other, just as protons are. Atoms of a particular element must have the same number of protons but can have different numbers of neutrons.

Explanation:

Since the vast majority of an atom's mass is found its protons and neutrons, subtracting the number of protons (i.e. the atomic number) from the atomic mass will give you the calculated number of neutrons in the atom. In our example, this is: 14 (atomic mass) – 6 (number of protons) = 8 (number of neutrons).

Explanation:

mixture............

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Answer: I believe the answer is C a mixture

Explanation:

Answer:

C) 100:1

Explanation:

To solve this question we must use H-H equation:

pH = pKa + log [A-] / [HA]

Where pH = 7.0, pKa = 5.0, A- is proton aceptor and HA proton donor.

Replacing:

7 = 5 + log [A-] / [HA]

2 = log [A-] / [HA]

100 = [A-] / [HA]

That means the ratio of proton aceptor:proton donor is:

Answer:

See explanation

Explanation:

Image 1 is the chair conformation of trans-1-ethyl-2-methyl cyclohexane while image 2 is the chair conformation of Cis-1-ethyl-2-methyl cyclohexane.

Now let us look at the two structures closely. In the chair conformation, the more stable structure is the structure that has the bulky groups placed in the equatorial position.

Clearly, in trans-1-ethyl-2-methylcyclohexane, the ethyl and methyl groups are found to be in equatorial positions. Hence, trans-1-ethyl-2-methylcyclohexane is more stable in the chair conformation than cis-1-ethyl-2-methyl cyclohexane which has its methyl and ethyl groups in axial position.

Answer:

The correct answer is 5.61 × 10⁻⁵.

Explanation:

Based on the given information, let us consider the experimentally determined value of K as 0.000717, with the value of T₁ as 45 degree C, the value of T₁ in Kelvin would be,

T₁ = 273 +45 = 318 K

The value of T₂ is 25 degree C, or (25+273) = 298 K

Based on Arrhenius equation:

ln(K₂/K₁) = -Ea/R(1/T₂ - 1/T₁)

Now putting the values in the equation we get,

ln(K₂/0.000717) = -12070 (1/298 - 1/318)

ln(K₂/0.000717) = -2.54738

K₂/0.000717 = e^-2.54738 = 0.078286

K₂ = 0.078286 × 0.000717

K₂ = 5.61 × 10⁻⁵

Explanation:

hi If u don't mind can u plz send a picture as it don't make sense for what is the data given e.g CO

Answer: The number of cations are [tex]3.24 \times 10^{22}[/tex] and number of anions are  [tex]3.24 \times 10^{22}[/tex] in 6.42 g of KBr.

Explanation:

The molar mass of KBr is (39.10 + 79.90) g/mol = 119.00 g/mol

Now, the dissociation equation for KBr is as follows.

[tex]KBr \rightarrow K^{+} + Br^{-}[/tex]

This means that 1 mole of KBr is forming 1 mole of [tex]K^{+}[/tex] (cation) and 1 mole of [tex]Br^{-}[/tex] (anion).

According to mole concept, 1 mole of every substance contains [tex]6.022 \times 10^{23}[/tex] atoms. Hence, number of cations present in 6.42 g KBr is calculated as follows.

[tex]No. of cations = Moles \times 6.022 \times 10^{23}\\= \frac{mass}{molar mass} \times 6.022 \times 10^{23}\\= \frac{6.42 g}{119.00 g/mol} \times 6.022 \times 10^{23}\\= 3.24 \times 10^{22}[/tex]

As according to the equation, there are equal number of moles of both cation and anions.

This means that the number of anions are also [tex]3.24 \times 10^{22}[/tex].

Thus, we can conclude that the number of cations are [tex]3.24 \times 10^{22}[/tex] and number of anions are  [tex]3.24 \times 10^{22}[/tex] in 6.42 g of KBr.

The number of cations and anions present in potassium bromide is 3.24 × 10²².

In one mole of any substance 6.022 × 10²³ atoms of that substance is present and this is known as Avogadro's number.

KBr is a strong electrolyte means it fully dissociates into their constitute ions. So, the number of moles of produced ions is equal to the moles of KBr and dissociation is represented as:

KBr → K⁺ + Br⁻

From this it is clear that 1 mole of cation and 1 mole of anion is produced from 1 mole of KBr. Moles of KBr will be calculated as:

n = W/M, where

W = given mass = 6.42g

M = molar mass = 119

n = 6.42 / 119 = 0.053 moles

No. of cations and anions present in 0.053 moles = 0.053 × 6.022 × 10²³ = 3.24 × 10²².

Hence, 3.24 × 10²² is the no. of cations and anions.

To know more about Avogadro's number,  visit the below link:
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Answer:no

Explanatio:

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Answer:

25.7 mL of H₂SO₄

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

H₂SO₄ + 2NaOH —> Na₂SO₄ + 2H₂O

From the balanced equation above,

The mole ratio of acid, H₂SO₄ (nₐ) = 1

The mole ratio of base, NaOH (n₆) = 2

Finally, we shall determine the volume of H₂SO₄ needed for the reaction. This can be obtained as shown below:

Molarity of acid, H₂SO₄ (Mₐ) = 0.350 M

Volume of base, NaOH (V₆) = 60 mL

Molarity of base, NaOH (M₆) = 0.300 M

Volume of acid, H₂SO₄ (Vₐ) = ?

MₐVₐ / M₆V₆ = nₐ/n₆

0.350 × Vₐ / 0.3 × 60 = 1/2

0.350 × Vₐ / 18 = 1/2

Cross multiply

0.350 × 2 × Vₐ = 18

0.7 × Vₐ = 18

Divide both side by 0.7

Vₐ = 18 / 0.7

Vₐ = 25.7 mL

Thus, 25.7 mL of H₂SO₄ is needed for the reaction.

Answer:

A. Loam soil is best for planting

Thank you....

Have a good day....

Answer:

star

Explanation:

Answer:

Water's polarity and its ability to form hydrogen bonds give it special properties, including adhesion, cohesion, and the ability to moderate temperature.

Answer:

Oxygen is oxidized and hydrogen is reduced.

Explanation:

Let's consider the redox reaction during the electrolysis of water in an electrolytic cell.

2 H₂O ⇒ 2 H₂ + O₂

The corresponding half-reactions are:

2 e⁻ + 2 H₂O ⇒ H₂ + 2 OH⁻

2 H₂O ⇒ O₂ + 4 H⁺ + 4 e⁻

Oxygen is oxidized since its oxidation number increases from -2 to 0.

Hydrogen is reduced since its oxidation number decreases from +1 to 0.

Answer:

I wish i could help but I don't understand it .so maybe someone can come and help u

Answer:

b

Explanation:

Answer:

2nd option is NOT a postulate of kinetic theory of gases

Explanation:

actually particles move in straight random motion and create bombardment with the molecules and container

Answer:

I think it's 2-methylhept-2-ene

Explanation:

Hope this will help and correct me if I'm wrong.

The spectator ion in a reaction is the one which have no role on precipitate or product formation. Here the product is water and aqueous copper chloride. Where copper ions and chloride ions are spectator ions undergoing no state change.

A spectator ion in a reaction is the ion which does not undergo any change in state and remains so in the reaction system. To identify the spectator ion we have to write the balanced complete ionic equation.

An ionic equation of a reaction represents all the ions in the reaction with their states of matter given in brackets. The charges of each ions have to be written correctly and they have to balanced in both side.

If the same ions in same state are there in both side, they can be canceled and the net ionic equation does not contain these ions. Therefore, these ions which can be canceled from the net equation is called spectator ions.

In the given reaction copper ions and Cl- ions are aqueous state on both side. Thus, they can be cancelled from net equation representing the formation of water. Hence, Cu²⁺ and Cl⁻are the spectator ions.

To find more on spectator ions, refer here:

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Answer:

[tex]2.3molKClO_3[/tex]

[tex]285.95gKClO_3[/tex]

Explanation:

Hello there!

In this case, according to the balanced chemical equation:

[tex]2KClO_3\rightarrow 2KCl+3O_2[/tex]

We can observe the 2:3 mole ratio in order to calculate the moles of KClO3 required for such production:

[tex]3.5molO_2*\frac{2molKClO_3}{3molO_2} \\\\2.3molKClO_3[/tex]

And in grams:

[tex]2.3molKClO_3*\frac{122.55gKClO_3}{1molKClO_3} \\\\=285.95gKClO_3[/tex]

Regards!

Regards!

Answer:

[tex]{ \boxed{ \bf{newtons \: law \: of \: gravitation}}} [/tex]

It states that the product of masses of bodies ( planets and satellites and asteroids ) in space is inversely proportional to square of their separation mean distance

[tex]{ \tt{formular : F = \frac{GMm}{ {r}^{2} } }}[/tex]

Answer:

19 because it gained 3 electron so 12-3=9 beryllium

2

3 is 46-2=44

4 is 2

5 is 5

6 84 polonium

7

8 oxygen

Explanation:

plz let me know if they are right or wrong:)

Answer:

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Answer:

Ka = 6.02x10⁻⁶

Explanation:

The equilibrium that takes place is:

We calculate [H⁺] from the pH:

Keep in mind that [H⁺]=[A⁻].

As for [HA], we know the acid is 0.66% dissociated, in other words:

We calculate [HA]:

Finally we calculate the Ka:

The question is incomplete, the complete question is:

The solubility of slaked lime, [tex]Ca(OH)_2[/tex], in water is 0.185 g/100 ml. You will need to calculate the volume of [tex]2.50\times 10^{-3}[/tex]M HCl needed to neutralize 14.5 mL of a saturated

Answer: The volume of HCl required is 290mL, the mass of [tex]Ca(OH)_2[/tex] is 0.0268g, the moles of

Explanation:

Given values:

Solubility of [tex]Ca(OH)_2[/tex] = 0.185 g/100 mL

Volume of [tex]Ca(OH)_2[/tex] = 14.5 mL

Using unitary method:

In 100 mL, the mass of [tex]Ca(OH)_2[/tex] present is 0.185 g

So, in 14.5mL. the mass of [tex]Ca(OH)_2[/tex] present will be =[tex]\frac{0.185}{100}\times 14.5=0.0268g[/tex]

The number of moles is defined as the ratio of the mass of a substance to its molar mass.

The equation used is:

[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}[/tex] ......(1)

Given mass of [tex]Ca(OH)_2[/tex] = 0.0268 g

Molar mass of [tex]Ca(OH)_2[/tex] = 74 g/mol

Plugging values in equation 1:

[tex]\text{Moles of }Ca(OH)_2=\frac{0.0268g}{74g/mol}=0.000362 mol[/tex]

Moles of [tex]OH^-[/tex] present = [tex](2\times 0.000362)=0.000724mol[/tex]

The chemical equation for the neutralization of calcium hydroxide and HCl follows:

[tex]Ca(OH)_2+2HCl\rightarrow CaCl_2+2H_2O[/tex]

By the stoichiometry of the reaction:

Moles of [tex]OH^-[/tex] = Moles of [tex]H^+[/tex] = 0.000724 mol

The formula used to calculate molarity:

[tex]\text{Molarity of solution}=\frac{\text{Moles of solute}\times 1000}{\text{Volume of solution (mL)}}[/tex] .....(2)

Moles of HCl = 0.000724 mol

Molarity of HCl = [tex]2.50\times 10^{-3}[/tex]

Putting values in equation 2, we get:

[tex]2.50\times 10^{-3}mol=\frac{0.000724\times 1000}{\text{Volume of solution}}\\\\\text{Volume of solution}=\frac{0.000725\times 1000}{2.50\times 10^{-3}}=290mL[/tex]

Hence, the volume of HCl required is 290mL, the mass of [tex]Ca(OH)_2[/tex] is 0.0268g, the moles of

Explanation:

A process where two or more number of miscible liquids present in different fractions are separated by boiling at different temperatures is called fractional distillation.

The sudden decrease in temperature is because the compounds having lower boiling point have completed the distillation before vapor of the higher boiling point can actually fill the distillation head.