the force that holds the atoms together is referred to as a​

Answer:

3.50 Mol/L or M

Explanation:

450 mL / 1000 = 0.45 L

1 mole ------- 126.751 g

? mole ------- 200 g

moles = 200 * 1 / 126.751

moles = 200 / 126.751

= 1.57789 moles FeCl₂

M = n / V

M = 1.57789 / 0.45

= 3.50 Mol/L or M

Answer:

9.59 atm

Explanation:

Use ideal gas law    PV = n RT

 V = 5.34 L    n = 1.82 mole   T = ( 69.58+ 273.15) = 342.73 K

         R = .082057  L-Atm/(K - mole)

P  = n RT / V = 9.59 Atm

A solution has a pOH of 2.40. And it's pH is -11.6.

A solution has a pOH of 2.40. And it's pH is -11.6.

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The formula of the exceptional case of alkaline earth metal oxides is SO2. Details about alkaline earth metals are found below.

Alkaline earth metals are elements of the group 2 in the periodic table. Alkaline earth metals are six in number and are as follows:

According to this question, Basic or alkaline properties are characteristic of all alkaline earth metal oxides. Sulphur IV oxide (SO2) is an oxide that has acidic properties.

Therefore, the formula of the exceptional case of alkaline earth metal oxides is SO2.

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Answer:

2.5 X 10^-43

Explanation:

CoS> Co + S

Co=X

S=X

X= 5.0 X 10^-22

Ksp= [X][X]

Ksp= [5.0 X 10^-22][5.0 X 10^-22]

Ksp= 2.5 X 10^-43

The Ksp for CoS is calculated as 2.5 × 10⁻⁶³ (mol/L)². This value represents the equilibrium constant for the dissociation of CoS in water and indicates the extent of its solubility in the solution.

The molar solubility of CoS is given as 5.0 × 10⁻²² mol/L. In the chemical equation for the dissolution of CoS in water, it dissociates into Co⁻²⁺ and S²⁻ ions.

The solubility product constant (Ksp) expression for CoS is written as:

Ksp = [Co²⁺] * [S²⁻]

Since CoS dissolves completely to form one Co²⁺ ion and one S²⁻ ion, we substitute the molar solubility values into the Ksp expression:

Ksp = (5.0 × 10⁻²² mol/L) * (5.0 × 10⁻²² mol/L)

Ksp = 2.5 × 10⁻⁴³ (mol/L)²

Therefore, the Ksp for CoS is calculated as 2.5 × 10⁻⁶³ (mol/L)². CoS has an extremely low solubility in water, resulting in an exceptionally small Ksp value.

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Explanation:

Adding logs of same base is equivalent to multiplying the arguments. You get:

[tex] log_{3}(35x) = 4[/tex]

Use the definition of the log to turn this into an exponential function:

[tex] {3}^{4} = 35x[/tex]

[tex]81 = 35x[/tex]

[tex]x = \frac{81}{35} [/tex]

Answer:

12.125 moles of Z

Explanation:

Hi! Here, since you only know the number of moles for one of the reactants, you will use the coefficients in the reaction to use the mole ratio to find your answer. Since the question states that there are 4.85 mol A and excess B, A is your limiting reactant. This means that once all of the A is used up in the reaction, you will have your maximum amount of Z left behind because there will only be B left and no A to make more Z.

The mole ratio of A:Z is 2:5, found from the coefficients in the chemical equation(2 moles of A for every 5 moles of Z).

So, start with the information that is given to you (4.85 mol A) and then use the mole ratio, like this:

4.85 mol A([tex]\frac{5 mol Z}{2 mol A}[/tex])

This way, the mol A will cancel out, leaving behind mol Z (always put the unit you are looking for on top).

Doing this leads to mol Z = 12.125 mol.

I hope this helps! Good luck with your finals!

As per the given 4.85 moles of A will produce 12.125 moles of Z, assuming excess B.

A chemical reaction is the transformation of one or more substances, known as reactants, into one or more different substances, known as products.

Chemical reactions involve the breaking and forming of chemical bonds between atoms and molecules, causing atoms to rearrange and the chemical and physical properties of the substances involved to change.

From the balanced chemical equation, we can see that 2 moles of A react with 3 moles of B to produce 5 moles of Z.

So the mole ratio of A to Z is 2:5.

Therefore, if 2 moles of A react to produce 5 moles of Z, then 4.85 moles of A will produce:

(4.85 mol A) x (5 mol Z / 2 mol A) = 12.125 mol Z

Thus, 4.85 moles of A will produce 12.125 moles of Z, assuming excess B.

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Answer:

2672 kj

Explanation:

C4H10 O mole wt =  48 + 10 + 16 =~ 74 gm

27200 gm / 74 gm/mole = 367.57 moles

367.57 moles * 7.27 kj/mole =

Answer:

cyclobutane

Explanation:

Answer:

A. it conducts electricity

Explanation:

A. Since Nitric Acid is a strong acid, which means it is a strong oxidizing agent, this makes Nitric Acid a good conductor of electricity.

B. Basic solutions are only going to form OH⁻ ions. A Nitric Acid solution will form H⁺ ions.

C. Alkaline substances (pH greater than 7) are more likely to turn blue, so HNO₃ would turn that blue into a red color.

D. I don't know much about phenolphthalein , all I know is that is is pink in Alkaline solutions (basic) and colorless in acidic solutions.  

I hope this helps, good luck!

Answer:

The balloon will instanly freeze and "shatter" :)

Explanation:

The volume of a gas will shrink if its temperature decreases. The cold liquid nitrogen cools the air inside the balloon. As a result the molecules of air slow down causing the volume of the balloon to decrease. :)

Have an amazing day!!

Please rate and mark brainliest!!

Answer:

See Below.

Explanation:

Recall that molarity is defined by moles of solute over liters of solution (mol/L).

Therefore, to make 90.0 mL of 2.0 M MgSO₄, we will need:

[tex]\displaystyle 90.0\text{ mL} \cdot \frac{2.0\text{ mol MgSO$_4$}}{1\text{ L}} \cdot \frac{1\text{ L}}{1000\text{ mL}} = 0.18\text{ mol MgSO$_4$}[/tex]

Convert this amount to grams. The molecular weight of MgSO₄ is 120.38 g/mol:

[tex]\displaystyle 0.18\text{ mol MgSO$_4$} \cdot \frac{120.38\text{ g MgSO$_4$}}{1\text{ mol MgSO$_4$}} = 22\text{ g MgSO$_4$}[/tex]

Therefore, to make the solution, we can add 22 grams of MgSO₄ into a graduated cylinder, then mix and dilute the solution with distilled water until we reach 90.0 mL.

Answer:

See below

Explanation:

MgSO4 mole wt = 24.3+32+16*4 = 120.3 gm

 for 90cc of 2M:

90/1000 * 2 * 120.3 = 21.66 gm

take 21.66 gm of the solid and dilute with water to 90 ml

Answer:

The answer is A. Aquifer

Explanation:

It stores groundwater.

A 10.0 g-sample of liquid water absorbs 50 cal of energy when its temperature increases from 13 °C to 18 °C.

Heat is a form of energy resulting from the difference in temperature between two bodies.

A sample of water initially at 13 °C, absorbs energy in the form of heat and its temperature increases to 18 °C.

We can calculate the amount of heat absorbed using the following expression.

Q = c × m × ΔT

Q = 1.0 cal/g°C × 10.0 g × (18 °C - 13 °C) = 50 cal

where,

A 10.0 g-sample of liquid water absorbs 50 cal of energy when its temperature increases from 13 °C to 18 °C.

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Answer:

An azeotropic compound is a mixture of two substances which distil at the same temperature. An azeotrope is a mixture of compounds with the same composition in the vapour as in the liquid.

Explanation:

Hope it helps!

The free energy change for the hydrolysis of ATP by using the equation ATP(aq)+H2O(l)→ADP(aq)+Pi(aq) is -64362.77joules.

We can calculate the free energy change of reaction by using the standard free energy by using the below link:

ΔG = ΔG⁰ + RTlnQ, where

R = ideal gas constant = 8.314 J/mol.K

ΔG⁰ = standard free energy = -46.5 kJ = -46500 J

T = temperature = 298 K

Q = ratio of the products to reactants for the given chemical reaction

Q = [0.0019][0.0038] / [0.0089] = 8.1×10⁻⁴

On putting values on the above equation, we get

ΔG = -46500 + (8.314)(298)ln(8.1×10⁻⁴)

ΔG = -46500 + (2477.5)(-7.21)

ΔG = -46500 - 17862.77

ΔG = -64362.77

Hence required value of free energy change is -64362.77 joules.

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Answer:

what is this i dont know what kind of math this is

Answer:

Strong acids completely ionize while weak acids partially ionize

Explanation:

the answer is in the image above

Answer:

Spriral

Explanation:

hope this helps

[tex]\huge\mathbb{✒ANSWER}[/tex]

HI BRAINLY USER!!

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༺⊰━━━━━━━━━─⊰

This can be rounded to 673g

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Answer:

OC

Explanation:

Is the only answer which implies a dilemma.

An ethical dilemma associated with prosthetics among the following is The future use of prosthetics to enhance a body part's natural function. Hence, Option (C) is correct

In medicine, a prosthesis, or a prosthetic implant, is an artificial device that replaces a missing body part, which may be lost through trauma, disease, or a condition present at birth.

Prostheses are intended to restore the normal functions of the missing body part.

Therefore, An ethical dilemma associated with prosthetics among the following is The future use of prosthetics to enhance a body part's natural function. Hence, Option (C) is correct

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Answer:

Hello the answer for the volcanos is here below:

7. Pipe

8. Crater

9. Vent

10. lava flow

11. magma chamber

Hope this helps :)

Heavy water contains 20% hydrogen by mass and 80% oxygen by mass.

Heavy water is water which contains the heavy isotope of hydrogen, Hydrogen-2 in its molecules.

The mass of heavy water is greater than that of water.

The molar mass of heavy water is 20.0 g

The percentage composition of the elements in heavy water are as follows:

Hydrogen = 2 × 2g/20 g ×100% = 20%

Oxygen = 16g/20g × 100% = 80%.

Therefore, Heavy water contains 20% hydrogen by mass and 80% oxygen by mass.

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Answer:

h20+co2= hco3

Explanation:

so that is not a single bond so it in gread 11 so I don't study it

Answer:

4.0473g. Attached in image are the calculations I used to reach this answer.

Let's see

[tex]\\ \rm\Rrightarrow [M_3X_3]\leftrightharpoons {[M^{3+}]\atop 3x}+{[X^{3-}]\atop 3x}[/tex]

So

As solubility and molar mass given

[tex]\\ \rm\Rrightarrow [M_3X_3]=\dfrac{Solubility}{Molar\:mass}[/tex]

[tex]\\ \rm\Rrightarrow x=\dfrac{0.039}{108.64}[/tex]

[tex]\\ \rm\Rrightarrow x=0.00034M=3.4\times 10^{-4}M[/tex]

So

[tex]\\ \rm\Rrightarrow K_{sp}=(3x)(3x)=(3x)^2=9x²[/tex]

So

[tex]\\ \rm\Rrightarrow K_{sp}=9(3.4\times 10^{-4})^2=0.0000010404=104\times 10^{-6}mol^2L^{-2}=104\mu mol^2L^{-2}[/tex]

(A) The mass number of the daughter product is 234.

(B) The atomic number of daughter product is 90.

(C) The isotope that remains after the alpha decay is thorium-234.

(D) The mass number of the daughter product is 4 less than the original atom.

(E) The atomic number of the daughter product is 2 less than the original atom.

The alpha decay of Uranium involves the emission of alhpa particles and thorium-234 as daughter product.

[tex]^{238}_{92}U\ ---- > \ \ ^4_2He \ + \ ^{234}_{90}Th[/tex]

From the equation of alpha decay of Uranium, we can infer the following;

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Answer:

its the same thing as 3 x3 or 3+3 it always come´s back as 9 or 6 Because of life

Explanation:

Urine has the color of pale yellow to deep amber. It is odorless and has a pH of 4.5-8.0