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Dima020 [189]
2 years ago
8

hello frds need help (@_@;) The lower end of thistle funnel should be dipped in solution why Give reason .I will give brainlest

to the answer .Thank u (≧▽≦)​
Chemistry
2 answers:
snow_tiger [21]2 years ago
8 0

Answer:

The end of the thistle funnel should be dipped under acid to prevent the escape of gas from the thistle funnel.

Explanation:

hiii everyone

Tcecarenko [31]2 years ago
4 0

Explanation:

<h3>The end of the thistle funnel should be </h3><h3>dipped under acid to prevent the gas from</h3><h3> the thistle funnel.</h3>
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Science can best be described as
Savatey [412]
A way of building knowledge about the world around us through observation and experimentation.
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3 years ago
Consider the following reaction at constant pressure. Use the information provided below to determine the value of ΔS at 473 K.
Elis [28]

Answer:

The reaction will be spontaneous

Explanation:

To determine if the reaction will be spontaneous or not at this temperature, we need to calculate the Gibbs's energy using the following formula:

\Delta G= \Delta H - T * \Delta S

<u>If the Gibbs's energy is negative, the reaction will be spontaneous, but if it's positive it will not.</u>

Calculating the \Delta G= -1267 - 473 K* \Delta S :

\Delta G= -1267 - 473 K* \Delta S

Now, other factor we need to determine is the sign of the S variation. When talking about gases, the more moles you have in your system the more enthropic it is.

In this reaction you go from 7 moles to 8 moles of gas, so you can say that you are going from one enthropy to another higher than the first one. This results in: \Delta S>0[/tex}Back to this expression: [tex]\Delta G= -1267 - 473 K* \Delta S

If the variation of S is positive, the Gibbs's energy will be negative always and the reaction will be spontaneous.

4 0
3 years ago
Colligative properties depend upon the ____. Select one: a. nature of the solute b. nature of the solvent c. number of solute pa
Flauer [41]
The correct answer is C. Colligative properties only depend upon the number of solute particles in a solution but not on the identity or nature of the solute and solvent particles. I hope this anwers your question. 
3 0
3 years ago
Read 2 more answers
A saturated solution of baso4 has a concentration of 0.5mol/l. a 55ml sample is taken by you. what is the mass of baso4 in the s
SIZIF [17.4K]

Answer:

6.4 g BaSO₄

Explanation:

You have been given the molarity and the volume of the solution. To find the mass of the solution, you need to (1) find the moles BaSO₄ (via the molarity ratio) and then (2) convert moles BaSO₄ to grams BaSO₄ (via the molar mass). It is important to arrange the conversions in a way that allows for the cancellation of units (the desired unit should be in the numerator). The final answer should have 2 sig figs to reflect the sig figs of the given values.

Molarity (mol/L) = moles / volume (L)

(Step 1)

55 mL / 1,000 = 0.055 L

Molarity = moles / volume                             <----- Molarity ratio

0.5 (mol/L) = moles / 0.055 L                        <----- Insert values

0.0275 = moles                                             <----- Multiply both sides by 0.055

(Step 2)

Molar Mass (BaSO₄): 137.33 g/mol + 32.065 g/mol + 4(15.998 g/mol)

Molar Mass (BaSO₄): 233.387 g/mol

0.0275 moles BaSO₄          233.387 g
---------------------------------  x  -------------------  =  6.4 g BaSO₄
                                                1 mole

6 0
2 years ago
QUICK! Which best explains how the collisions of materials in space contribute to the formation of layers in protoplanets?
Pani-rosa [81]

Answer:

B. The collisions release heat, which results in the heating and subsequent melting, sinking, and rising of materials.

Explanation:

Got it correct on edge

5 0
2 years ago
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