How Do Textbooks Usually Describe Le Chtelier's Famous Principle (2024)

Answer:

true hope it helps

Explanation:

have a nice day

Answer:

37 - Rubidium - Rb

Explanation:

Answer:

there is no paragraph

Explanation:

Answer:

7.00

Explanation:

Pure Water is the only purely neutral substance on earth so it has a neutral pH of 7

Answer:

no it is not a complete model

Answer:

D is the answer i think

When we add water to a glass of pure fruit the volume of the solution increases while the solute remains constant so the molarity of the juice decreases.

What is Molarity ?

Molarity is defined as the amount of solute (in moles)in per litre of solution.

It is also known as molar concentration of a solution , It is expressed in mol/l .

When water is added the volume of the solution is increasing for fixed moles of juices therefore ,

The molarity of the juice will decrease and option d is correct.

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Answer:

A

Explanation:

You can see the top part looks kinda like methane, and the bottom part looks like hexane.

Answer:

A is correctvia A P E x

Explanation:

Answer: The concentration of nitrogen gas in parts per million is 7.99 ppm.

Explanation:

Solute is defined as the component of the solution present in a smaller proportion while the solvent is defined as the component of the solution present in a larger proportion.

Concentration in ppm (parts per million) represents the amount of solute in milligrams present per kilograms of solution.

[tex]\text{Concentration in ppm}=\frac{\text{Mass of solute (in mg)}}{\text{Mass of solution (in kg)}}[/tex]

OR

[tex]\text{Concentration in ppm}=\frac{\text{Mass of solute (in grams)}}{\text{Mass of solution (in grams)}}\times 10^6[/tex] ......(1)

Given values:

Mass of solute (nitrogen gas) = 0.008 g

Mass of solvent (water) = 1000 g

Mass of solution = [0.008 + 1000] g = 1000.008 g

Plugging values in equation 1:

[tex]\text{Concentration in ppm of nitrogen gas}=\frac{0.008g}{1000.008g}\times 10^6\\\\\text{Concentration in ppm of nitrogen gas}=7.99 ppm[/tex]

Hence, the concentration of nitrogen gas in parts per million is 7.99 ppm.

Answer: It completely dissociates in water is a characteristic of strong acid.

Explanation:

An acid which dissociates completely to give hydrogen ions [tex](H^{+})[/tex] is called a strong acid.

For example, HCl is a strong acid and it dissociates completely as follows.

[tex]HCl \rightleftharpoons H^{+} + Cl^{-}[/tex]

Strong acids are able to conduct electricity in water as more number of ions are present in the solution as compared to the ions present in a solution of weak acid.

Strong acids increase the concentration of [tex]H^{+}[/tex] ions.

Thus, we can conclude that it completely dissociates in water is a characteristic of strong acid.

Answer:

38.51g NaOH

Explanation:

NaOH=39.907 g/mol

0.965 mol NaOH X 39.90g NaoH/1 mol NaOH= 38.51 g NaOH

Answer:

The molarity of the solution is 0.29 [tex]\frac{moles}{liter}[/tex]

Explanation:

Molarity, or molar concentration, is a measure of the concentration of a solute in a solution, be it some molecular, ionic or atomic species. It is defined as the number of moles of solute that are dissolved in a given volume.

Molarity is calculated as the quotient between the number of moles of solutes and the volume of the solution:

[tex]Molarity=\frac{number of moles of solute}{volume}[/tex]

Molarity is expressed in units [tex]\frac{moles}{liter}[/tex].

In this case:

number of moles of solute= 2.1 molesvolume= 7.3 liters

Replacing:

[tex]Molarity=\frac{2.1 moles}{7.3 liters}[/tex]

Molarity= 0.29 [tex]\frac{moles}{liter}[/tex]

The molarity of the solution is 0.29 [tex]\frac{moles}{liter}[/tex]

Answer:

M = 0.29 M

Explanation:

We are given;

Number of moles of NaCl; n = 2.1 moles

Total volume of solution; V = 7.3 L

Formula for molarity is;

M = n/L

Thus;

M = 2.1/7.3

M = 0.2878 M

Approximating to 2 decimal places gives;

M = 0.29 M

Answer:

1.5 grams of carbon dioxide

Explanation:

According to this question, a dash of vinegar and baking soda balloon system weighed 65 grams. The system weighted 63.5grams after releasing the carbon dioxide in it.

This means that, to get the amount of carbon dioxide (CO2) produced in the system, we subtract the mass of the system after releasing CO2 from the initial mass of the system before releasing CO2.

That is;

Mass of CO2 produced = 65g - 63.5g

Mass of CO2 produced = 1.5grams

Answer: The percent by volume of isopropyl alcohol in a solution made by mixing 120 mL of the alcohol with enough water to make 350 mL of solution is 25.5%.

Explanation:

Given: Volume of solute = 120 mL

Volume of solvent = 350 mL

Now, total volume of the solution is as follows.

[tex]V_{total} = V_{solute} + V_{solvent}\\= 120 mL + 350 mL\\= 470 mL[/tex]

Let us assume that 100 mL of solution is taken and the amount of isopropyl alcohol present in it is as follows.

[tex]\frac{V_{solute}}{V_{total}} \times 100 mL\\\frac{120 mL}{470} \times 100 mL\\= 25.53 mL[/tex]

Hence, there is 25.53 mL isopropyl alcohol is present in 100 mL of solution. Therefore, %v/v is calculated as follows.

[tex]Percent (v/v) = \frac{25.53 mL}{100 mL}\\= 25.5%[/tex]

Thus, we can conclude that the percent by volume of isopropyl alcohol in a solution made by mixing 120 mL of the alcohol with enough water to make 350 mL of solution is 25.5%.

Answer:

???

Explanation:

Answer:

45 km

Explanation:

To find the distance Tylee walked, multiply her speed by the time.

[tex]d=10(4.5)[/tex]

[tex]d =45[/tex]

The distance Tylee walked is 45 kilometers.

I hope this helped :)

Tylee walked 45 km from her parents' farm into town .

What is Speed ?

Speed can be understood as the measure of how fast an object is moving.

It is the rate at which an object covers certain distance in fixed amount of time.

It is scalar quantity and its S.I. unit is m/sec .

[tex]\rm Speed = \dfrac{distance}{time}[/tex]

It is given in the question speed = 10 km/h and time = 4.5 hr

So,

[tex]\rm Distance = Speed\; \times\;time[/tex]

[tex]\rm Distance = 10\; \times\;4.5\\\\\rm Distance = 45 \;km\\[/tex]

Therefore Tylee walked 45 km from her parents' farm into town .

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Answer:

The answer is A. a wave of vibrating electric and magnetic energy.

Answer:

D

Explanation:

1 mole of N2 reacts with 3 moles of H2

28 g of N2 reacts with 6g of H2

x will react with 5.8g of H2

x= (28*5.8)/6

= 27.0g

Answer:

[tex]\small\mathfrak\green{calcium \: carbonate} \\ \\ \small\mathfrak\red{hope \: it \: helps...}[/tex]

Answer:

69%

Explanation:

Percent yield = ?

Theoretical yield = 985 grams

Experimental Yield = 680 grams

Percent Yield = Experimental Yield / Theoretical Yield * 100

Percent Yield = 680 / 985 * 1 00

Percent Yield = 0.690 * 100 = 69%

Answer:

a solar eclipse is when the moon moves between the earth and the sun, so the moon casts a shadow on the earth

Explanation:

Answer:

the moon gets in the way of the sun and cast a shadow onto earth

Explanation:

Answer:

Kingdom

Explanation:

Out of all the choices, Kingdom is the most inclusive and least specific.

When the question asks for the most inclusive and least specific group, it is asking for the most broad group.

Also, you can just look at the left of the image. It basically shows you the answer.

Answer:

0.693 (you can round it up if you want to)

Explanation:

Density= mass ÷ volume

54.2 ÷ 78.1 = 0.693

I hope this helped☺

Answer:

0.0203M

Explanation:

We'll use the integrated rate law for second order reactions:

1/[A]=1/[A]initial+kt

[A]initial=0.5M

k=0.1/s

t=200°C but we need in Kelvins

t=200 +273.15K=473.15K

1/[A]=1/[0.5]+[0.1 x 473.15]

1/[A]=49.315M

[A]~0.0203M

Hope it helps:)

Yes!

Explanation:

If density is greater, the object sinks. Saturn is mainly composed of the lightest two gases known, hydrogen and helium. It is the only planet in our solar system whose density is less than water.

Answer: The new temperature is 4768 K.

Explanation:

Given: [tex]T_{1}[/tex] = 298 K, [tex]V_{1}[/tex] = V, [tex]P_{1}[/tex] = P

[tex]T_{2}[/tex] = ?, [tex]V_{2}[/tex] = 4V, [tex]P_{2}[/tex] = 4P

Using the combined gas law formula as follows.

[tex]\frac{P_{1}V_{1}}{T_{1}} = \frac{P_{2}V_{2}}{T_{2}}[/tex]

Substitute the values into above formula as follows.

[tex]\frac{P_{1}V_{1}}{T_{1}} = \frac{P_{2}V_{2}}{T_{2}}\\\frac{P \times V}{298 K} = \frac{4P \times 4V}{T_{2}}\\T_{2} = 4768 K[/tex]

Thus, we can conclude that the new temperature is 4768 K.