A sample of chlorine gas has a volume of 6 liters at a temperature of 10 °C. What volume does the gas occupy at 50 °C?​

From the solubility curve, it is clear that 84 g of potassium nitrate can be dissolved in 100 g of water at 50°C.

Solubility is defined as the ability of a substance which is basically solute to form a solution with another substance. There is an extent to which a substance is soluble in a particular solvent. This is generally measured as the concentration of a solute present in a saturated solution.

The solubility mainly depends on the composition of solute and solvent ,its pH and presence of other dissolved substance. It is also dependent on temperature and pressure which is maintained.Concept of solubility is not valid for chemical reactions which are irreversible. The dependency of solubility on various factors is due to interactions between the particles, molecule or ions.

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Answer:

false

Explanation:

I don't think centigrade ranges from 0 to 100 and kelvin 237 and 373 absolute -273°c and 0K

Answer:

false............................

Answer:

it's an example of a closed circuit

the wavelength of a yellow light with a frequency of 5.2 x 10^14 Hz is approximately 5.77 x 10^-7 meters.

The speed of light, c = 3.0 x 10^8 m/s, is a constant in the universe. The wavelength of light, λ, and its frequency, f, are related to the speed of light by the formula:

c = λ × f

Rearranging the formula to solve for the wavelength, we get:

λ = c / f

Substituting the given values, we get:

λ = (3.0 x 10^8 m/s) / (5.2 x 10^14 Hz)

= 5.77 x 10^-7 m

Therefore, the wavelength of a yellow light with a frequency of 5.2 x 10^14 Hz is approximately 5.77 x 10^-7 meters.

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Answer:

A carbon atom has six protons. This means that a carbon atom also has

a) Six electrons

b) Six neutrons

Explanation:

Answer:

Explanation:

Here, we want to select the option true of valence electrons

Valence electrons are electrons that reside in the outermost shell of the atom

They have the highest energy of the different kinds of electrons present in the atom

Due to their very high energy levels, they reside in the farthest position from the nucleus which is the outermost or valence shell

The correct answer here is thus B

The work done on the system for the reaction \(C2H5OH(1) + 3O2(g) → 2CO2(g) + 3H2O(0)\) at 25°C is 1240 kJ.

The work done on a system can be calculated using the Gibbs free energy equation: \(\beta ΔG = ΔH - TΔS,\) where ΔH is the enthalpy change, T is the temperature, and ΔS is the entropy change. The given enthalpy change is -1367 kJ, which represents the amount of heat released during the reaction.

To calculate the work done on the system at 25°C, we need to calculate the entropy change.

\(ΔS°\)(C₂H₅OH) = 160.7 J/K·mol

ΔS°(O₂) = 205.0 J/K·mol

ΔS°(CO₂) = 213.8 J/K·mol

ΔS°(H₂O) = 188.8 J/K·mol

Using the formula \(ΔS° = ΣnS°(products) - ΣmS°(reactants)\), we can calculate the entropy change for the reaction. This gives:

\(ΔS° = [2(213.8 J/K·mol) + 3(188.8 J/K·mol)] - [1(160.7 J/K·mol) + 1(205.0 J/K·mol) + 3(188.8 J/K·mol)]\)

\(ΔS° = -470.9 J/K·mol\)

Now we can calculate the work done on the system using the Gibbs free energy equation:

\(ΔG = ΔH - TΔS\)

\(ΔG = -1367 kJ - (25°C + 273.15)K × (-0.4709 kJ/K·mol)\)

\(ΔG = -1240 kJ/mol\)

The negative sign indicates that the work is done on the system, and its magnitude is 1240 kJ. Therefore, the work done on the system for the reaction \(C2H5OH(1) + 3O2(g) → 2CO2(g) + 3H2O(0)\) at 25°C is 1240 kJ.

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Based on the information provided, I would recommend the Sunburst Variety of corn as the best choice for growing in the drought conditions of the desert environment.

Sunburst Variety of corn has been specifically developed to be drought-tolerant, meaning that it can survive and produce a good yield even with minimal rainfall.

Therefore, I would recommend the Sunburst variety of corn as the best choice for growing in the desert environment due to its drought-tolerance, deep root system, heat tolerance, high yield, and good quality grain.

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Answer:

there is no shift in the state

Explanation:

The correct answer is - There is no shift in the state.

Reason -

If K > Q, a reaction will proceed forward, converting reactants into products.  If K < Q, the reaction will proceed in the reverse direction, converting products into reactants.  If Q = K then the system is already at equilibrium.

where Q, is the reaction Quotient

Answer: C3H2O

Explanation: To find the empirical formula of the compound, we need to determine the simplest whole number ratio of atoms in the compound.

Assuming we have 100 g of the compound, we can convert the percentages to masses of each element:

Carbon: 66.7 g

Hydrogen: 3.74 g

Oxygen: 29.6 g

Next, we need to convert these masses to moles using the atomic masses:

Carbon: 66.7 g / 12.01 g/mol = 5.55 mol

Hydrogen: 3.74 g / 1.01 g/mol = 3.70 mol

Oxygen: 29.6 g / 16.00 g/mol = 1.85 mol

Now we need to divide each of these mole values by the smallest of the three:

Carbon: 5.55 mol / 1.85 mol = 3.00

Hydrogen: 3.70 mol / 1.85 mol = 2.00

Oxygen: 1.85 mol / 1.85 mol = 1.00

These ratios give us the empirical formula:

C3H2O

However, we can simplify this formula by dividing each subscript by 2:

C1.5H1O0.5

Finally, we can multiply through by 2 to get rid of the decimals:

C3H2O

The IUPAC name for the alkane shown is 3-ethyloctane.

IUPAC name (International Union of Pure and Applied Chemistry name) is a standardized system for naming organic chemical compounds. The IUPAC naming system is based on a set of rules that specify how to name compounds based on their molecular structure, including the type and number of atoms, and their arrangement in the molecule. The IUPAC name provides a unique and unambiguous identifier for a specific chemical compound and helps to avoid confusion in communication between chemists and scientists. The IUPAC system is widely used in the scientific community and is recognized internationally as the standard system for naming organic compounds.

The IUPAC name for the alkane shown is 2-methyl-5-sec-butylhexane.

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Complete question:

The solubility of MgF₂ in water is 0.00635 moles per liter, if Ksp for the compound is 6.4 x 10⁻⁹.

The solubility of a compound in water is determined by its solubility product constant (Ksp), which is a measure of the extent to which the compound dissociates into its constituent ions in water.

For the given compound, magnesium fluoride (MgF₂), the Ksp is 6.4 x 10⁻⁹.

MgF₂ dissociates in water according to the following equation;

MgF₂(s) ↔ Mg²⁺(aq) + 2F⁻(aq)

The Ksp expression for MgF₂ is then;

Ksp = [Mg²⁺] × [F⁻]²

where [Mg²⁺] represents the concentration of Mg²⁺ ions in solution, and [F⁻] represents the concentration of F⁻ ions in solution.

Since MgF₂ dissociates into one Mg²⁺ ion and two F⁻ ions, the stoichiometry of the reaction is 1:2. This means that for every mole of MgF₂ that dissolves, one mole of Mg²⁺ ions and two moles of F⁻ ions are formed.

Let's assume that the solubility of MgF₂ in water is "x" moles per liter. Therefore, the concentration of Mg²⁺ ions and F⁻ ions in solution will also be "x" moles per liter.

Substituting these values into the Ksp expression, we get;

Ksp = [Mg²⁺] × [F⁻]²

6.4 x 10⁻⁹ = x × (2x)²

6.4 x 10⁻⁹ = 4x³

Now, we can solve for "x";

4x³ = 6.4 x 10⁻⁹

x³ = (6.4 x 10⁻⁹ / 4

x³ = 1.6 x 10⁻⁹

x = (1.6 x 10⁻⁹(1/3)

x ≈ 0.00635

Therefore, the solubility of MgF₂ in water is approximately 0.00635 moles per liter.

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Answer: The pressure is 1137.5 mm Hg its pressure if its volume is increased to 150 \(cm^{3}\) at 35 °C

Explanation:

Given: \(P_{1}\) = 750 mm Hg,    \(V_{1} = 130 cm^{3}\),     \(T_{1} = 20^{o}C\)

\(P_{2}\) = ?,          \(V_{2} = 150 cm^{3}\),            \(T_{2} = 35^{o}C\)

Formula used to calculate the new pressure is as follows.

\(\frac{P_{1}V_{1}}{T_{1}} = \frac{P_{2}V_{2}}{T_{2}}\)

Substitute the values into above formula as follows.

\(\frac{P_{1}V_{1}}{T_{1}} = \frac{P_{2}V_{2}}{T_{2}}\\\frac{750 mm Hg \times 130 cm^{3}}{20^{o}C} = \frac{P_{2} \times 150 cm^{3}}{35^{o}C}\\P_{2} = 1137.5 mm Hg\)

Thus, we can conclude that the pressure is 1137.5 mm Hg its pressure if its volume is increased to 150 \(cm^{3}\) at 35 °C.

Answer:

83

Explanation:

3X + 2Y → 5C + 4D

2 moles of Y will produce 5 moles of C

33.0 moles of Y will produce: 33.0 x 5/2 = 82.5 or 83 moles of C

Answer:Na+Cl2---->NaCl

Explanation:

Answer:

I've balanced the equations.

They are in the attached image.

The values in red are the added number to make the equation balanced .

Answer:

.0466 L

Explanation:

To start off, use dimensional analysis to convert everything to standard PV=nRT units.

\(\frac{39.0}{1}\) x \(\frac{1}{1000}\) = .039 L

\(\frac{802}{1}\) x \(\frac{1}{760}\) = 1.055 atm

17 +273 = 290

...and so on.

Solve for n for the starting pressure, volume and temp. You'll need it for the final equation.

n= PV/RT \(\frac{1.055 *.039}{.0821 * 290}\)= .0017 number of moles

Solve for volume of the end point.

V= nRT/P \(\frac{.0017*.0821*280}{.838}\) = .0466 L of helium, or 46.6ml Less pressure means it will take up more space.

Answer:

The answer to the question, 'which statement describe the formation of diamonds is option C. Diamond deposits are formed in the earth mantle and release to the earth surface by mean of volcanic eruptions which produce kimberlites. The formation of diamonds require very high temperatures and pressures. These conditions exist below the earth surface at the depth of about 150 kilometers and 1050 degree Celsius temperature.

Explanation:

Answer:

Diamond deposits are formed in the earth mantle and release to the earth surface by mean of volcanic eruptions which produce kimberlites

Explanation:

Answer:

8.65x10 7 grams of nacl

Explanation:

There are 6.02x10 23 atoms per one mol

so

8.88x 10 29 x (1/6.02 x 10 23)

Will give us mols of NaCl

to go from mols to grams we multiple mols by molar mass

so

1.48x10 6 mols of Nacl x 58.44 g/mol = 8.65x10 7 grams of nacl which can be converted to

86500 kg

At equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.

1: Write the balanced chemical equation:

\(C_O\)(g) + \(Cl_2\)(g) ⟶ \(C_OCl_2\)(g)

2: Set up an ICE table to track the changes in moles of the substances involved in the reaction.

Initial:

\(C_O\)(g) = 0.3500 mol

\(Cl_2\)(g) = 0.05500 mol

\(C_OCl_2\)(g) = 0 mol

Change:

\(C_O\)(g) = -x

\(Cl_2\)(g) = -x

\(C_OCl_2\)(g) = +x

Equilibrium:

\(C_O\)(g) = 0.3500 - x mol

\(Cl_2\)(g) = 0.05500 - x mol

\(C_OCl_2\)(g) = x mol

3: Write the expression for the equilibrium constant (Kc) using the concentrations of the species involved:

Kc = [\(C_OCl_2\)(g)] / [\(C_O\)(g)] * [\(Cl_2\)(g)]

4: Substitute the given equilibrium constant (Kc) value into the expression:

1.2 x \(10^3\) = x / (0.3500 - x) * (0.05500 - x)

5: Solve the equation for x. Rearrange the equation to obtain a quadratic equation:

1.2 x \(10^3\) * (0.3500 - x) * (0.05500 - x) = x

6: Simplify and solve the quadratic equation. This can be done by multiplying out the terms, rearranging the equation to standard quadratic form, and then using the quadratic formula.

7: After solving the quadratic equation, you will find two possible values for x. However, since the number of moles cannot be negative, we discard the negative solution.

8: The positive value of x represents the number of moles of \(Cl_2\)(g) at equilibrium. Substitute the value of x into the expression for \(Cl_2\)(g):

\(Cl_2\)(g) = 0.05500 - x

9: Calculate the value of \(Cl_2\)(g) at equilibrium:

\(Cl_2\)(g) = 0.05500 - x

\(Cl_2\)(g) = 0.05500 - (positive value of x)

10: Calculate the final value of \(Cl_2\) (g) at equilibrium to get the answer.

Therefore, at equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.

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Answer: 78.59 lb/ft

Explanation:

use stoichiometry to solve

1.26g/cm x ( 1pound/ 454 grams) X (28317 Cm/1 ft) =  78.59 pounds/ft

If an equation includes 7(CrO₄)₂, the numbers of Cr's and O's atoms that are there are 14 and 56 respectively.

The number of atoms present in a chemical compound can be calculated by multiplying the subscript of the particular element by any coefficient.

According to this question, 7 moles of chromate with the chemical formula; (CrO₄)₂ is given. The number of oxygen and chromium atoms in this compound can be calculated as follows:

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Answer:

d) law of conservation of mass

Explanation:

Answer:

B

Explanation:

Vaccines prevent illness and disease

Answer:

a) 3,3-dimethyl-2-butanol

b) Attached below

c) Yes, this compound is optically active because it has one chiral carbon. Highlighted as Red below.

d) Structures attached below.

e) Isomers shown below.

Explanation:

Here, we want to discuss ionic and covalent compounds

Ionic compounds also called electrovalent compounds are compounds that are formed when electrons are transferred from the valence shell of an electropositive atom (usually a metal) to the valence shell of an electronegative atom (usually a non-metal or a less electropositive or more electronegative atom), which results in bonding.

Take for example the case of Sodium and chlorine

Sodium has three shells with shell configuration 2,8,1 with one electron in its valent shell

Removing the extra 1 electron in its last shell will make it achieve the stability of a noble gas which is one of the reasons we do not have some elements existing in uncombined forms. It needs an atom to accept this extra electron it wants to remove

Now, here comes chlorine with shell configuration 2, 8, 7

It needs an extra electron to achieve the noble gas configuration

Hence, it will gladly accept the elcctron sodium wants to donate

This type of bonding that react from the transfer of the electron is the ionic bond. The electron is completely transferred to the chlorine shell and has no interaction anymore with the sodium atom

Example of this compound is Sodium Chloride

Molecular compounds are formed from electron sharing. The key word here is sharing as different from the transfer keyword in ionic compouunds. Since the electron is shared, it is controlled by both atom since it is still within their valence shells

A practical application can be seen in the case of carbon (iv) oxide

Here, we have a central carbon atom and two side oxygen atoms

The carbon atom has the shell configuration of 2,4 (it needs 4 extra electrons to achieve stability).

For the oxygen , the configuration is 2,6 (they both need 2 each since they are 2)

So, there must be an interaction.

Hence, we can have the 4 from the carbon shared 2 ,2 . But it will be within the two shells.

The carbon has 8 now ( 4 itself and 2 each from the contributing oxygen)

For the oxygen, they have 8 too (6 itself and 4 distributed 2, 2 for each oxygen)

This type of covalent bonding is the ordinary covalent bonding.

An example of this compound is carbon (iv) oxide

Covalent bonding occurs between atoms of similar electronegativity such as between non metals.

The difference between the two is that in ionic bonding, there is transfer of electrons while in covalent bonding, there is sharing of electrons

When different atoms join together, they are called a compound. Compounds are made of molecules (so molecules could be an alternate answer, but not all molecules are compounds)

Answer:

it is compound

Explanation:

Two or more elements combined into one substance through a chemical reaction, such as water, form a chemical compound. All compounds are substances, but not all substances are compounds.

Answer:

100

Explanation: