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mihalych1998 [28]
4 years ago
10

Test tubes are used mostly for _____. A. storing experimental samples B. making precise measurements of liquids C. containing ex

tra chemicals left over from an experiment D. holding substances so they can be viewed using a microscope
Chemistry
1 answer:
Annette [7]4 years ago
8 0

Answer: A) Storing experimental samples

Explanation:

It is a common piece of laboratory glassware that can be made of glass or plastic and is opened at the top and closed at the bottom.

It cannot be used for measurements because there is no graduation indicating the volume.

Althought it can contain extra chemicals left over from an experiment, it is not the main proposal of the glassware that is to store samples.

It cannot be used in a microscope and the object for that is a microscope slide.

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(b) at 400k both compounds are gases. at this temperature, which compound, ch4(g) or ccl4(g), behaves more like an ideal gas? ju
Andrej [43]

CH4 has more ideal gas behavior than CCl4 due to its higher intermolecular interaction.

We must note that ideal gases have minimal interaction with each other. Hence, in deciding which gas has ideal gas behavior, we have to consider the gas that has the least degree of intermolecular interaction.

However, the both gases contain nonpolar molecules but CCl4 has a greater molecular mass and has more intermolecular interaction than CH4 hence CH4 has greater ideal gas behavior than CCl4.

Learn more about ideal gas: brainly.com/question/8711877

5 0
3 years ago
Sulfonation of benzene has the following mechanism:(b) Write the overall rate law in terms of the initial rate of the reaction.
erica [24]

The overall rate law in terms of the initial rate of the reaction is:

= k_{overall} [H_{2} SO_{4} ]^{2} [C_{6}H_{6}]

The Sulfonation of benzene has the following mechanism:

(1)  2H_{2} SO_{4} ⇌ H_{3}O^{+}  + HSO_{4}  + SO_{3}

[fast]

(2) SO_{3}  + C_{6} H_{6} → H(C_{6} H_{5}^{+} )SO_{3}^{-}

[slow]

(3) H(C_{6} H_{5}^{+} )SO_{3}^{-}+ HSO_{4}^{-} → C_{6} H_{5} SO_{3}^{-}   + H_{2} SO_{4}

[fast]

(4) C_{6} H_{5} SO_{3}^{-}  + H_{3}O^{+} → C_{6} H_{5} SO_{3} H + H_{2} O

[fast]

<h3>Calculation of rate law:</h3>

Given that the reaction's slowest step is the rate-dependent step, the following is the definition of rate law:

Rate = k_{2} [SO_{3} ][C_{6} H_{6} ]    

However, the issue is that because SO_{3} is an intermediate, it cannot be accounted for in the general rate legislation.

The following rate rule governs the synthesis of SO_{3} :

Rate = k_{1}[H_{2} SO_{4}  ]^{2}

Consequently, if we replace equation 1 with equation 2,

Rate is determined to be = k_{overall} [H_{2} SO_{4} ]^{2} [C_{6}H_{6}]

Hence, the overall rate law in terms of the initial rate of the reaction is:

= k_{overall} [H_{2} SO_{4} ]^{2} [C_{6}H_{6}]

Learn more about rate law here:

brainly.com/question/4222261

#SPJ4

6 0
1 year ago
What do scientists use to increase the surface area of a solute
marta [7]

use a mortar & pestle to grind the solute into smaller particles, thus increasing the surface area.


6 0
4 years ago
Read 2 more answers
A ball has a mass of 2.0 kg and travels a distance of 24 meters in 10 seconds what is the Velocity
Amanda [17]
2.4 meters per second
8 0
3 years ago
The air pressure in a tire is 2.38 atm. What is the pressure in kilopascals.
Anna71 [15]

Answer:

The answer is

<h2>241.15 kPa</h2>

Explanation:

To find the pressure in kilopascals we must first find the pressure in Pascal

To find the pressure in Pascal we use the conversion

1 atm = 101 , 325 Pa

If 1 atm = 101325 Pa

then 2.38 atm = 2.38 × 101325

= 241153.5 Pa

Converting it into kPa we have the final answer as

<h3>241.15 kPa</h3>

Hope this helps you

8 0
3 years ago
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