A man heats a balloon in the oven. The balloon initially measures 0.402 L with a temperature of 20.0°C, what will the volume of the balloon be after he heats it to a temperature of 250.0°C?

Answer:

The natural phenomenon used to describe the length of a meter is the speed of light. The length of a meter is the length a light path travels in 1/(299792458) seconds through a vacuum.

The definition is better due to the uncertainty involved in the use of the length of a standard meter stick because the length of the meter stick could change due to atmospheric conditions from place to place

Explanation:

Answer: The water Inside the cell is stored inside the vacuole(s)

Explanation:

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Answer:

\(\boxed {\boxed {\sf B. \ 22 \ grams}}\)

Explanation:

We need to use the formula for heat of vaporization.

\(Q=H_{vap}*m\)

Identify the variables.

\(H_{vap}=2260 \ J/g\\Q=50,000 \ J \\\)

Substitute the values into the formula.

\(50,000 \ J=2260 \ J/g*m\)

We want to find the mass. We must isolate the variable, m.

m is being multiplied by 2260 J/g. The inverse operation of multiplication is division. Divide both sides by 2260 J/g.

\(\frac{50,000 \ J}{2260 \ J/g} =\frac{2260 \ J/g*m}{2260 \ J/g}\)

\(\frac{50,000 \ J}{2260 \ J/g} =m\)

Divide. Note that the Joules (J) will cancel each other out.

\(\frac{50,000 \ }{2260 \ g} =m\)

\(22.1238938 \ g =m\)

Round to the nearest whole number. The 1 in the tenth place tells us to leave the number as is.

\(22 \ g \approx m\)

The mass is about 22 grams, so choice B is correct.

The name for this W(C2H3O2)4 is the chemical formula for lead(IV) acetate, often known as lead tetraacetate, is Pb(C2H3O2)4.

Chemical formula is defined as any of a number of ways to describe the structure or content of chemical substances. The chemical formula is a way of expressing information about the atomic proportions that make up a certain chemical compound or molecule using the numbers and symbols of the chemical elements. The sorts of atoms and their numbers in a molecule or compound are described using chemical formulae. Each element's atoms are denoted by one or two distinct letters.

It is not a salt because it is a colorless solid that dissolves in nonpolar, organic liquids. Moisture causes it to break down, therefore acetic acid is usually added when storing it. The substance is utilized to create organic compounds.

Thus, the name for this W(C2H3O2)4 is the chemical formula for lead(IV) acetate, often known as lead tetraacetate, is Pb(C2H3O2)4.

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The molar concentration of a 12% sodium chloride solution is approximately 2.05 M.

To determine the molar concentration of a 12% sodium chloride solution, we need to convert the given percentage concentration into molarity.

First, we need to understand that the percentage concentration refers to the mass of the solute (sodium chloride) relative to the total mass of the solution.

In this case, a 12% sodium chloride solution means that there are 12 grams of sodium chloride in 100 grams of the solution.

To convert this into molar concentration, we need to consider the molar mass of sodium chloride, which is 58.5 g/mol.

We can start by calculating the number of moles of sodium chloride in 12 grams:

Moles of sodium chloride = mass of sodium chloride / molar mass of sodium chloride

Moles of sodium chloride = 12 g / 58.5 g/mol = 0.205 moles

Next, we calculate the volume of the solution in liters using the density of the solution. Since the density is not provided, we assume a density of 1 g/mL for simplicity:

Volume of solution = mass of solution / density

Volume of solution = 100 g / 1 g/mL = 100 mL = 0.1 L

Finally, we calculate the molar concentration (Molarity) by dividing the number of moles by the volume in liters:

Molar concentration = moles of solute / volume of solution

Molar concentration = 0.205 moles / 0.1 L = 2.05 M

Therefore, the molar concentration of a 12% sodium chloride solution is approximately 2.05 M.


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Answer:

P₂ = 300 atm

Explanation:

Given that,

Initial volume, V₁ = 600 L

Initial pressure, P₁ = 400 atm

We need to find the pressure if the volume is 800 L.

We know that the relation between pressure and volume is given by :

\(P\propto \dfrac{1}{V}\\\\\dfrac{P_1}{P_2}=\dfrac{V_2}{V_1}\\\\P_2=\dfrac{P_1V_1}{V_2}\\\\P_2=\dfrac{600\times 400}{800}\\\\P_2=300\ atm\)

So, the new pressure is equal to 300 atm.

They have same mass

Explanation:

If you think wisely 100 pounds and 100 pounds have the same weight so the answer is equal

Answer:

The volume of the gas is approximately 4.41 liters

Explanation:

The details of the data of the Neon gas are;

The number of moles of Neon gas present, n = 11.6 moles

The temperature of the sample of Neon gas, T = 120 K

The pressure of the sample of the Neon gas, P = 25.6 atm

By the ideal gas equation, we have;

P·V = n·R·T

Where;

R = The universal gal constant = 0.08205 L·atm·mol⁻¹·K⁻¹

Therefore, we get;

V = n·R·T/P

Which gives;

V = 11.6 moles × 0.08205 L·atm·mol⁻¹·K⁻¹ × 120 K/(25.9 atm) ≈ 4.4097915 L

The volume of the gas, V ≈ 4.41 L.

Answer: Inertia

Explanation:

Answer:Independent, dependent, and controlled variables.

Explanation:

Answer:

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Answer:

1. Is 3

2. Is evaporation

3. I don't really understand it

Answer:. 1

Explanation:

The ideal gas law formula is used to determine the missing values in questions. When dealing with problems that require solving for missing values using the ideal gas law formula, always ensure that all values are expressed in the correct units and temperature is converted to kelvin.

The ideal gas law formula is represented as PV = nRT, where P represents pressure, V represents volume, n represents the number of moles of gas, T represents the temperature in kelvin, and R represents the universal gas constant. Solve for missing values using the ideal gas law formula:1. 10°C, 5. 5 L, 2 mol, __ atm.The temperature must be converted to kelvin first: T(K) = T(°C) + 273.15K = 10°C + 273.15 = 283.15KPV = nRT

Rearrange the equation to isolate P: P = nRT / V

Substitute the given values:

P = (2 mol)(0.0821 L•atm/mol•K)(283.15K) / 5.5 L

: P = 8.28 atm

2. __ °C, 8. 3 L, 5 mol, 1. 8 atm.The equation PV = nRT can be rearranged to T = PV / nRThe temperature must be converted to kelvin first: T(K) = T(°C) + 273.15T = PV / nR

Substitute the given values: T = (1.8 atm)(8.3 L) / (5 mol)(0.0821 L•atm/mol•K)T(K) = T +

: T = 332 K or 59°C

The temperature must be converted to kelvin first:

T(K) = T(°C) + 273.15K

= 12°C + 273.15

= 285.15

KPV = nRT

Solve for n by rearranging the equation: n = PV / RT

Substitute the given values: n = (1.2 atm)(3.4 L) / (0.0821 L•atm/mol•K)(285.15K): n = 0.141 mol

The ideal gas law formula is used to determine the missing values in questions. When dealing with problems that require solving for missing values using the ideal gas law formula, always ensure that all values are expressed in the correct units and temperature is converted to kelvin.

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Answer:

32 degrees Fahrenheit

Answer:

32f or 0c

Explanation:

32 ferenhiet or 0 celsius

Answer:

Matter in compound having chemical bonds while in mixture matter have physical interaction.

Explanation:

We know that element is a substance that is made up of atoms. The atoms of different elements combine to form compound. These are the form of matter that have characteristic properties and having fixed chemical composition. The atoms of different elements are combine to gather through the chemical bond.

For example:

Consider the compound water. It has hydrogen and oxygen. Atoms are bonded together through chemical bond and having fixed proportion. So we can say that their interaction is chemical interaction.

While in mixture different matter combined through the physical interaction.

Atoms of different elements are not chemically bonded together.

For example:

Mixture of sand and water.

Mixture of oil and water.

Answer:

\(\% O=24.6\%\)

Explanation:

Hello!

In this case, since the by-mass percent of an element in a compound is computed by taking into account its atomic mass, the number of atoms in the molecules and the molar mass of the compound, we can write:

\(\% O=\frac{2*16.00}{130.18 } *100\%\\\\\% O=24.6\%\)

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Trigonal pyramidal: The correct response is Thionyl chloride structure, revealing trigonal pyramidal shape.

Tetrahedral: In a very early study of the vapor from solid SeCLi using electron diffraction, Lister and Sutton came to the conclusion that the SeCL molecule is (distorted) tetrahedral with a (mean) SeCl bond distance of 2.13 0.04 [13].

SeCl2 chemical: SeCl2 is twisted or V-shaped because the main atom possesses four pairs of electrons—two bonding pairs and two lone pairs. As a result, SCl2 possesses a tetrahedral form and bent molecular geometry in nature. Two Chlorine atoms around a single Sulfur atom to form SCl2.

The tetrahedral molecular structure of SO2Cl2 has an asymmetric charge distribution on its core atom. This molecule is hence polar. Sulfur dichloride has a tetrahedral electron shape. With two bond pairs and two lone pairs, the molecular geometry is twisted.

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Answer:

its 90

Explanation:

because you add the mass together

Lei's alcohol consumption can lead to a deficiency in various B vitamins, but one vitamin that may be of particular concern is thiamin or vitamin B1.

Alcohol interferes with the body's ability to absorb and utilize thiamin, which is an essential nutrient required for the proper functioning of the nervous system, muscles, and heart. Chronic alcohol consumption can lead to a thiamin deficiency and a condition called Wernicke-Korsakoff syndrome, which can cause confusion, memory loss, and vision problems.

Moreover, alcohol consumption can also lead to deficiencies in other B vitamins such as riboflavin, niacin, and pantothenic acid, as these vitamins are also essential for energy metabolism and the proper functioning of the nervous system. Therefore, individuals who consume alcohol regularly should ensure they consume a balanced diet and consider taking a B-complex vitamin supplement to help prevent deficiencies.

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A radioactive element has a half life of 10 days then there are  7 days would it take for 1000 grams of it to decay to 125 grams .

Calculation ,

radioactive element has a half life = 10 days ( given )

Kt = 0.069

K = 0.069 / t

K = 0.069 /  10 days = 0.0069

Kt = ㏑a/a-x

where ,

a = concentration of radioactive element at time 0  = 1000 grams

a-x = concentration of radioactive element at time t = 125 grams

Putting the value of a , a- x and K in equation ( i ) we get ,

0.0069 × t = ㏑1000 grams/125 grams = ㏑8 = 2.07

t= 2.07 / 0.0069 = 7 .05 days or 7 days

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Answer: Ti and Ni

Explanation:

Answer:

Alkalis form chemical salts when they are combined with acids. e.g Sodium hydroxide  ,Potassium hydroxide  and Ammonia

Explanation:

Answer:

a substance which is alkali is a base that is soluble in water.an example is sodium hydroxide.

If 250 mL of methane (CH4) effuses through a small hole in 48 s, the time required for the same volume of helium to pass through the hole is approximately 96 s.

The effusion rate of a gas is inversely proportional to the square root of its molar mass, according to Graham's law of effusion. In this case, we need to compare the effusion rates of methane and helium.

Since the volume is constant, we can use the ratio of their times of effusion.

Let's assume the molar mass of methane (CH4) is M1 and the molar mass of helium (He) is M2. According to Graham's law, the ratio of the effusion times is given by:

(time for methane) / (time for helium) = √(M2 / M1)

Given that the time for methane is 48 s, we need to find the time for helium. Rearranging the equation, we have:

(time for helium) = (time for methane) / √(M2 / M1)

By substituting the molar masses of methane (16.04 g/mol) and helium (4.00 g/mol), we can calculate:

(time for helium) = 48 s / √(4.00 g/mol / 16.04 g/mol)

(time for helium) = 48 s / √(0.25)

(time for helium) = 48 s / 0.5

(time for helium) = 96 s

Therefore, the time required for the same volume of helium to pass through the hole is approximately 96 seconds.

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Answer:

C. 18

Explanation:

This is because 6+12 = 18

Answer:

Where are the answer choices

?

Answer:

The answer is

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question

volume of copper = 14.75 cm³

Density = 8.96 g/cm³

The mass is

mass = 8.96 × 14.75

We have the final answer as

Hope this helps you

Answer:

a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction