How does adding a non-volatile solute to a pure solvent affect the boiling point of the pure solvent?The solvent will have a lower boiling point.

The solvent will have a higher boiling point.

The solvent's boiling point will not be affected.

The solvent's boiling point will most likely change, but not in a predictable way.

Answers

Answer 1

Answer: The correct answer is the second statement. The solvent will have a higher boiling point. Adding a non-volatile solute to a pure solvent will increase the boiling point of the solvent. This solution exhibit colligative properties. Colligative properties depend on the amount of solute dissolved in a solvent. These set of properties do not depend on the type of species present.

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48dm3 of a gas has a mass of 262g how many moles is this? What is the Mr? What must this element be?

Answers

$n=(V)/(V_(0))\n\nV=48dm^(3)\nV_(0)=22.4(dm^(3))/(mol)\n\nn=(48dm^(3))/(22.4(dm^(3))/(mol))\approx2mol\n\nn=(m)/(M_(r)) \ \ \ \Rightarrow \ \ \ M_(r)=(m)/(n)\n\nm=262g\nn=2mol\n\nM_(r)=(262g)/(2mol)=131(g)/(mol)$

This element must be xenon.

Final answer:

The number of moles is 1.49 and the molar mass is 176.124 g/mol.

Explanation:

To determine the number of moles, we can use the formula:

moles = mass / molar mass

Given that the mass of the gas is 262g and the molar mass is 176.124 g/mol, we can substitute these values into the formula:

moles = 262g / 176.124 g/mol = 1.49 moles (rounded to two decimal places).

Therefore, the number of moles is 1.49. The molar mass of the compound is 176.124 g/mol. In order to determine what element this is, we would need more information about the compound.

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How does the nucleus of a copper atom compared to the nucleus of a nickel atom

Answers

Copper has 29 protons in the nucleus, while Nickel has 28 protons.

Which represents the copernican model that is the most similar to that of Aristarchus?

Answers

Answer: A

Explanation: A is the answer

Final answer:

The Copernican model that is most similar to Aristarchus' . It is a simple and accurate heliocentric model that explains planetary motion with a small set of rules and a single underlying force.

Explanation:

The Copernican model that is most similar to that of Aristarchus is represented by Figure 6.31(b). In this model, Earth and other planets revolve around the Sun. It is a simpler and more accurate heliocentric model, similar to Aristarchus' idea of a heliocentric solar system. The Copernican model explains planetary motion with a small set of rules and a single underlying force, demonstrating the breadth and simplicity of the laws of physics.

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What derived unit is usually used to express the density of liquids?

Answers

Density refers to the measure of how much of the substance occupies a given volume at a given pressure and temperature
grams per milliliter or g/ml is the derived unit that is usually used to express the density of liquids.
In measuring the mass of a liquid, they use grams or kilograms, and uses liter, milliliters and cubic centimeters to measure the volume.
There are a lot of measuring tool that has been produced in the market. Like measuring cup, volume glassware commonly used in the laboratory.

The liquid-vapor equilibrium of a substance can be disturbed by cooling the substance.TRUE

FALSE

Answers

The statement "The liquid-vapor equilibrium of a substance can be disturbed by cooling the substance" is false. The substance must be heated in order to get the vapor phase of that substance.

In 3 to 5 sentences identify the type of bonding the would form between potassium and chlorine use a electronegativitynegativity to justify the bond type provide a chemical formula for resulting compound

Answers

Answer: Potassium and chlorine would form an ionic bond due to their large difference in electronegativity values (3.0 for chlorine and 0.8 for potassium). In ionic bonding, one atom completely transfers electrons to another atom to form ions with opposite charges that are attracted to each other. Since potassium loses one electron to become a positive ion (K+) and chlorine gains one electron to become a negative ion (Cl-), the resulting compound will be KCl (potassium chloride).

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