Write your question here (Keep it simple and clear to get the best answer)how can the boiling point of a liquid raised without adding soluble impurities?

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Answer 1

Answer: The boiling point of a liquid can be raised by adding pressure. Like wise, if you lower the pressure the boiling point goes down. This can be explained by the fact that boiling occurse when the vapor pressure equals the outside pressure so when the outside pressure rises the vapor pressure required for boiling also rises. Vapor pressure is proportional to temperature and therefore temperature needs to increase to make the vapor pressure increase. I hope this helps. Let me know in the comments if anything is unclear or if you want me to explain anything further.

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What happens when a magnet is passed through a wire loop

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It boosts the loop's flux, which creates a voltage surrounding the loop and moves an electric current through the wire.

What is electric current ?

A stream of charged particles, such as electrons or ions, traveling through an electrical conductor or a vacuum is known as an electric current. The net rate of passage of electric charge through a surface or into a control container is used to calculate it.

Electrons are moving constantly in current electricity. Direct current and alternating current are the two types of current used in electricity. Electrons travel only in the direction of direct current. Direct current is produced by batteries. Electrons move in both directions during alternating current.

Thus, It boosts the loop's flux, which creates a voltage surrounding the loop and moves an electric current through the wire.

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Hi There! :)

What happens when a magnet is passed through a wire loop

Electrical energy is converted to mechanical energy

An Arrhenius acid has(1) only hydroxide ions in solution
(2) only hydrogen ions in solution
(3) hydrogen ions as the only positive ions in solution
(4) hydrogen ions as the only negative ions in solution

Answers

Answer: (3) hydrogen ions as the only positive ions in solution

Explanation: Arrhenius acids are substances which dissociate in water to give $H^+$ ions.

For example: $HCl$ is an Arrhenius acid.

$HCl\rightarrow H^++Cl^-$

Arrhenius bases are substances which dissociate in water to give $OH^-$ ions.

For example: $NaOH$ is an Arrhenius base.

$NaOH\rightarrow Na^++OH^-$

The answer is (3) hydrogen ions as the only positive ions in solution. One ionic compound must have positive ion and negative ion at the same time. The Arrhenius base has hydroxyl ion as only negative ions in solution.

The cheetah has been clocked at 112 km/Hr. What speed would this be in ft/sec?

Answers

All you have to do in convert two units. You need to know that there are 3600 seconds in an hour, and one kilometer is ~3,280.8399 feet. 3,280.8399 * 112 is equal to 367454.0688 feet per hour. Now divide it by 3600 to get it into seconds. That is equal to 102.07057466666667 feet per second. That's your answer.

How does CFL lamps help in conservation of energy?

Answers

CFL means compact fluorescent lamp

It can save five times its purchase price in electricity cost because it contains toxic mercury that is equivalent in working: electrons that are bound to mercury atoms are excited to states where they will radiate ultraviolet light as they return to lower energy level, this ultraviolet light will be converted into visible light as it strikes to the coating of the bulb. Like LED that is high-efficiency house lighting.

The Kw of water varies with temperature. Calculate the pH of water at 46⁰C with a Kw = 1.219 x 10-14. Show all calculations leading to an answer.

Answers

Kw is equal to the concentration of the H+ and the OH-. In pure water, the concetration of H+ and the OH- is equal. In computing for the pH of water, we tke the negative log of the concentration of H+. To solve the concentration of H+ we take the square root of the Kw (Since Kw=[H+]*[H+] since [H+]=[OH-])
H+ is equal to 1.104*10^-7
negative log of the H+ conc. or the pH is 6.96 (pH = -log(1.104*10^-7))

The answer is valid and is close to the neutral pH which is 7.

LEWIS DOT
Mg3 N2 how do I get my answer

Answers

Final answer:

The Lewis dot structure for Mg3N2 represents the ionic bonding between magnesium and nitrogen. Each magnesium atom donates its 2 valence electrons to nitrogen, as represented by zero dots around each Mg and eight around each N.

Explanation:

The student is asking about the Lewis dot structure of Mg3N2, which is commonly known as magnesium nitride. The Lewis dot structure is a graphical representation of the molecule that shows how the electrons are arranged among the atoms of the molecule.

To draw the Lewis dot structure for magnesium nitride, follow these steps:

Magnesium (Mg) has 2 valence electrons, and there are 3 Mg atoms, so in total there are 6 valence electrons from Mg.
Nitrogen (N) has 5 valence electrons, and there are 2 N atoms, so in total there are 10 valence electrons from N.
In Mg3N2, Mg donates its 2 electrons to fill the octet of N, and N accepts these electrons.
After this, each Mg atom is surrounded by zero dots and each N atom is surrounded by eight dots.

This process represents the Ionic bonding in Mg3N2.

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