True or False: Based on the evidence in the graph, when 10 g of Ce2(SO4)3 is dissolved in 100 mL of water at 20°C, the solution is said to be unsaturated.

Moles of O_2

Now

[tex]\\ \rm\Rrightarrow V=\dfrac{nRT}{P}[/tex]

[tex]\\ \rm\Rrightarrow V=\dfrac{81.25(26)(8.314)}{3}[/tex]

[tex]\\ \rm\Rrightarrow V=5854.4L[/tex]

The volume of the gas in the chamber is equal to 664.36 L.

The ideal gas law is defined as an equation of the state of an ideal gas. This equation is written as the product of the volume and pressure of 1 mole gas is equal to the product of the gas constant and absolute temperature of the gas.

The mathematical formula of the ideal gas law is as follows:

PV = nRT

Where n is the moles of gas, V is the volume of the gas, R is the gas constant and P is the pressure.

The temperature of the gas in the chamber, T =  26° C = 299 K

The pressure of the gas, P = 3 atm

The value of the gas constant, R = 0.082 atm L/K mol

The number of moles of a given gas, n = 2600/32 = 81.25 mol

Substituting the values n, R, P, and T in the equation, we get:

3 × V = 81.25 × 0.082 × 299.15

V = 664.36 L

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The electronegativity of carbon is about 2.5 , and that of oxygen is about 3.5 , and naturally, (3.5−2.5=1.0)>0 . So, the electronegativity difference is greater for a C−O single bond than a F−F single bond.

Answer:

1.0

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Answer:

About 3.81 grams.

Explanation:

We can use the ideal gas law. Recall that:

[tex]\displaystyle PV = nRT[/tex]

Note that the universal gas constant R has the value 0.08206 L-atm/mol-K.

Hence, convert the measured pressure to atms (1 atm = 14.7 psi):

[tex]\displaystyle 27.0\text{ psi} \cdot \frac{1\text{ atm}}{14.7\text{ psi}} = 1.84\text{ atm}[/tex]

Rearrange the equation to solve for n, the number of moles of vaporized triethylamine and evaluate. The temperature is (25.0 + 273.15 ) K = 298.2 K:

[tex]\displaystyle \begin{aligned} n& = \frac{PV}{RT} \\ \\ & = \frac{(1.84\text{ atm})(0.500\text{ L})}{\left(\dfrac{0.08206\text{ L - atm}}{\text{mol-K}}\right)(273.2\text{ K})} \\ \\ &= 0.0376\text{ mol N(CH$_2$CH$_3$)$_3$}\end{aligned}[/tex]

Convert from moles to grams:

[tex]\displaystyle 0.0376\text{ mol N(CH$_2$CH$_3$)$_3$} \cdot \frac{101.22\text{ g N(CH$_2$CH$_3$)$_3$}}{1\text{ mol N(CH$_2$CH$_3$)$_3$}} = 3.81\text{ g N(CH$_2$CH$_3$)$_3$}}[/tex]

In conclusion, there is about 3.81 grams of vaporized triethylamine in the lecture bottle.

Answer: Uranium is not a problem in this case, as its radioactivity is very low. This is due to the long half-life. How much uranium will decay per second with a half-life of 700 million years? This is a very insignificant figure.

The amount, in grams, of [tex]CO_2[/tex] that would be produced from the burning of 3.0 mol amyl alcohol would be 660.15 grams

From the equation of the reaction:

[tex]2C_5H_1_1OH + 15O2 ---- > 10CO_2 + 12H_2O[/tex]

The mole ratio of amyl alcohol to the  [tex]CO_2[/tex] produced is 2:10.

Thus, for 3.0 mol of amyl alcohol, 15 mol of  [tex]CO_2[/tex] would be produced.

Mass of 15 mol  [tex]CO_2[/tex] = 15 x 44.01 = 660.15 grams

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The solution to the polynomial expression since the power of the variable is in the second degree is 6.29 × 10² cm

The power of a variable refers to the exponent of the variable and the highest power of a variable is the degree to which the variable is being raised. From the information given, the highest power of the variable is a polynomial.

Given that:

[tex]\mathbf{= 2.150 \times 10^2 \ cm + 7.34 \times 10^2 \ cm - 3.2 \times 10^2 \ cm }[/tex]

So, since the exponents are in the same power we are going to add them all together multiplied by their exponent.

i.e.

[tex]\mathbf{= (2.150 + 7.34 - 3.2) \times 10^2\ cm }[/tex]

[tex]\mathbf{= 6.29 \times 10^2\ cm }[/tex]

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Answer:

A. They repel more strongly than the bonding pairs, pushing the bonding pairs closer together.

Explanation:

Lone pairs are in simple terms just pairs of electrons on the atom. Negative does not attract negative so it repels from the bonds. I put it in the most simple terms possible. Like with magnets north and north don't attract. Same concept

Answer:

Specific heat is an intensive property (like density, color, etc.) that does not depend on the amount of a substance present. This allows substances to be identified using their specific heat. Imagine an unknown metal of known mass is heated to a known temperature.

Explanation:

Answer:

Displacement reaction

Explanation:

A displacement reaction is a reaction where a more reactive halogen will displace a less reactive one.

Reactivity decreases down group 17. So Chlorine, being the more reactive halogen, substitutes in the place of Br which is less reactive.

Answer:

Coal

Explanation:

Coal is derived from ancient plant life and thus consists largely of organic compounds.

The example of the organic portion of the Earth’s outer layers is coal.

The earth is made up of many layer which are very important for human life and our planet earth.

The earth is basically made up of three different layers.

There are basically five layers of earth atmosphere.

Thus, the example of the organic portion of the Earth’s outer layers is coal.

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Answer:

71.58%

Explanation:

Find the Mr of C₁₇H₁₉NO₃ :

(12 × 17) + 19 + 14 + (16 × 3) = 285

Mr of carbon in C₁₇H₁₉NO₃ :

12 × 17 = 204

Percent by mass of carbon = [tex]\frac{204}{285}[/tex] × 100 = 71.58%

try stopping putting the car in park before fixing

Answer:

A. Boron-11 with atomic number 5

[tex]\large\red{\underline{\textbf{Given:-}}}[/tex]

Answer:

WHR Boilers

Explanation:

I hope this helps.

Answer:

covalent

Explanation:

It is between two nonmetals so it is covalent. It would be ionic if it were between a metal and a nonmetal.

Carbon tetrachloride, CCl₄ is a colorless organic compound with a sweet smell and is used as a refrigeration fluid. The covalent bonding is seen in the carbon tetrachloride compound.

Covalent bonding is the chemical interaction that has been constituted of electron sharing between the atoms of the elements in the molecule or the compound.

This type of chemical bonding is seen when the difference between the electronegativities between the elemental atom is very small to initiate the electron transfer.

In carbon tetrachloride, carbon has 4 valence electrons whereas chlorine has 1 valence electron in its outer shells. The four Cl shares their electrons with the carbon atom to complete their octet.

Therefore, carbon tetrachloride shows covalent bonding.

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Answer:

compound

Explanation:

because h is hydrogen, then O is oxygen

2.9 L of oxygen are required to react with 5.8 L of hydrogen at STP to form water.

Hydrogen gas and oxygen gas combines in a molar volume ratio of 2 : 1 to form water.

The equation of the reaction is given as follows:

Thus, twice the volume of hydrogen is required with a given volume of oxygen to form water.

If 5.8 L of hydrogen is available for reaction at STP, the volume of oxygen required all be half of 5.8 L.

Volume of oxygen required = 5.8 / 2 = 2.9 L

Therefore, 2.9 L of oxygen are required to react with 5.8 L of hydrogen at STP to form water.

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Answer:

temperature, or true. I don't know which you want.

Explanation:

hope this helps

Answer:

Explanation:

General Remarks

The balance numbers are the same. (The balance numbers are 2 and 2)

The balance number in front of the O2 is 1.

So for every mole of O2 needed 2 moles of NO2 should be produced.

If 10.0 moles of oxygen is used, then you should get 20 mols of NO2 should be produced.

Formula

% yield = (what was produced / what should have been produced) *100

Givens

What was produced = 7 moles

What should have been produced = 20 moles

Solution

Substitute the givens into the equation

% yield = 8/20 * 100

% yield = 0.40 * 100

Answer: 40%

Answer:

Answer C

Explanation:

Chemical Bonds

The stability of atoms whose subshells are half-filled with electrons is due to equilibrium and symmetry.

The stability of an atom of an element depends on the number of electrons in its valence shell.

Atoms whose valence shells are completely filled are particularly stable atoms.

Similarly, subshells half-filled with electrons are particularly stable.

The stability of subshells half-filled with electrons can be explained based on equilibrium and symmetry.

A half-filled subshell distributes the energy of the electrons evenly and symmetrically such that the atom attians stability.

Therefore, stability of subshells half-filled with electrons is due to equilibrium and symmetry.

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Answer:

Without taking body measurements, the fabric material can run out of supply if the tailor uses it too much. And more material is required to fix small dresses or suits. So when body measurements are taken accurately, the tailor will know the exact amount of material to be used.

Explanation:

Answer:

A. True

Explanation:

A metallic bond is a type of chemical bond formed between positively charged atoms in which the free electrons are shared among a lattice of cations. In contrast, covalent and ionic bonds form between two discrete atoms. Metallic bonding is the main type of chemical bond that forms between metal atoms.

Explanation:

☹︎The base form (or root) of a verb is the form listed in the dictionary. It is the version of the verb without any endings (endings such as -s, -ing, and ed). The base form is the same as the infinitive (e.g., to walk, to paint, to think) but without the to.

Hess law can help us to obtain the enthalpy of a series of reactions by summation. The missing enthalpy of this reaction is −198kJ.

According to the Hess law of constant heat summation, the enthalpy of a sequence of reactions can be obtained as the sum of the enthalpies of all the reactions.

Now looking at all the reavtion written here in order to obtain the missing enthalpy, we conclude that the missing enthalpy is −198kJ.

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2SO2 (g) + O2 (g)→2SO3 (g), ΔH = −198 kJ.

Answer:

Have some attraction towards each other

Explanation:

Gases deviate from the ideal gas behavior because their molecules have forces of attraction between them. At high pressure, the molecules of gases are very close to each other so the molecular interactions start operating and these molecules do not strike the walls of the container with full impact.

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