At standard pressure, how do the boiling point and the freezing point of NaCl(aq) compare to the boiling point and the freezing point of H2O(image)?

Answers

Answer 1

Answer:

The boiling point of Sodium chloride(aq) is higher and the freezing point of Sodium chloride(aq) is lower.

What is the boiling point?

The boiling point is the temperature at which the pressure exerted by the surroundings upon a liquid is equal to the pressure exerted by the vapour of the liquid.

Usually, in this context, you would be referring to the boiling and freezing point of a Sodium chloride solution compared to pure H2O.

The boiling point of pure water is 100 degrees Celcius (212 Fahrenheit), and the freezing/melting point is below 0 degrees Celcius (32 Fahrenheit). For a solution, the boiling point is raised and the melting point is lowered.

This means that water will stay liquid for an increased range of temperature. Depending on the amount of Sodium chloride solute in the water, the boiling and melting points may change a few degrees.

Learn more about the boiling point here:

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Answer 2

Answer: Just had this multiple choice on my vacation packet the answer is the boiling point of NaCl(aq) is higher and the freezing point of NaCl(aq) is lower

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Arrange the following 0.10 MM solutions in order of increasing acidity: (i) NH4NO3NH4NO3, (ii) NaNO3NaNO3, (iii) CH3COONH4CH3COONH4, (iv) NaFNaF, (v) CH3COONa
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How do you calculate the number of moles when given the number of particles?

Select all of the answers that apply. The Doppler radar can tell you many things about the weather, like _____.
a) wind direction
b) wind speed
c) humidity
d) temperature
e) intensity of precipitation
f) location of precipitation
g) air pressure

Answers

Answer:

The correct answers are options a, b, e and f

Explanation:

Hello!

let's solve this!

Doppler radar is a radar that uses the Doppler effect. Use speed radiation, the speed return echoes.

Doppler radar can say things about the weather like precipitation intensity

and precipitation location

The correct answers are options a,b, e and f

Windspeed,locationofprecipitation,intensityofprecipitation,winddirection.

Isyouranswers

What is the correct name for SiCl5?

Answers

Answer:

SbCl5

Antimony pentachloride

Antimony pentachloride is a chemical compound with the formula SbCl5.

- wikipedia

You dissolve 0.74 g of potassium chloride (KCl) in 500 mL of water. What is the molarity of the solution?

Answers

There are a number of ways to express concentration of a solution. This includes molarity. Molarity is expressed as the number of moles of solute per volume of the solution. The concentration of the solution is calculated as follows:

Molarity = 0.74 g (1 mol / 74. 55 g) / 500mL (1 L / 1000 mL)

Molarity = 0.02 M

Answer:

0.02 M is the answer

Explanation:

Which scientist’s law about the ratios of masses of elements in a compound did John Dalton’s work on the atomic structure help to explain?

Answers

Joseph Proust's Law of Definite Proportions state that each compound is composed of exactly the same proportion of elements by mass. This law is independent of how much of the compound is used. For example, water is composed of hydrogen and water. If you take the mass percentages of the two elements, hydrogen will always be 1/9 of water's mass, while oxygen will always be 8/9 of water's mass.

This law helped shape Dalton's work on the Law of Multiple Proportions which states that several compounds can contain the same group of elements. The ratios of the elements' masses in the compounds are always whole numbers.

Answer:

joseph proust took the edge test

Explanation:

In which reaction are electrons transferred from one reactant to another reactant?(1) 2Ca(s) + O2(g) =>2CaO(s)
(2) AgNO3(aq) + KCl(aq) =>AgCl(s) + KNO3(aq)
(3) HCl(aq) + NaOH(aq) =>NaCl(aq) + H2O(l)
(4) H3O+(aq) + OH-(aq) => 2H=O(l)

Answers

Answer : The correct reaction is, (1) $2Ca(s)+O_2(g)\rightarrow 2CaO(s)$

Explanation :

(1) $2Ca(s)+O_2(g)\rightarrow 2CaO(s)$

In this reaction, the oxidation state of calcium (Ca) changes from (0) to (+2) and the oxidation state of oxygen (O) changes from (0) to (-2). In this reaction the electrons are transferred from one reactant (calcium) to another reactant (oxygen). This is a synthesis reaction.

(2) $AgNO_3(aq)+KCl(aq)\rightarrow AgCl(s)+KNO_3(aq)$

In this reaction, there is no changes in the oxidation state of the elements. So, in this reaction, no electrons transferred from one reactant to another reactant. This is a double-displacement reaction.

(3) $HCl(aq)+NaOH(aq)\rightarrow NaCl(aq)+H_2O(l)$

In this reaction, there is no changes in the oxidation state of the elements. So, in this reaction, no electrons transferred from one reactant to another reactant. This is a neutralization reaction.

(4) $H_3O^+(aq)+OH^-(aq)\rightarrow 2H_2O(l)$

In this reaction, there is no changes in the oxidation state of the elements. So, in this reaction, no electrons transferred from one reactant to another reactant. This is a combination reaction.

Hence, the correct reaction is, (1) $2Ca(s)+O_2(g)\rightarrow 2CaO(s)$ in which the electrons transferred from one reactant to another reactant.

The answer is (1). The electrons transfer form one reactant to another means that there is the change of valence. For other choices, the valence of reactant does not change.

Is combustion an example of the law of conservation of matter and why?

Answers

Answer:

Explanation:

The law of conservation of mass states that matter cannot be created or destroyed in a chemical reaction. For example, when wood burns, the mass of the soot, ashes, and gases, equals the original mass of the charcoal and the oxygen when it first reacted.

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