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Salsk061 [2.6K]
2 years ago
15

During an experiment, if you purposely change the temperature to test a hypothesis, the temperature is called the _____ variable

. A. manipulated B. responding C. experimental D. dependent
Chemistry
2 answers:
Romashka [77]2 years ago
6 0
<span>During an experiment, if you purposely change the temperature to test a hypothesis, the temperature is called the _____ variable. A. manipulated </span>
ruslelena [56]2 years ago
3 0
It's a manipulated variable so A
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The heat of vaporization of 1–pentanol is 55.5 kJ/mol, and its entropy of vaporization is 148 J/K•mol. What is the approximate b
tensa zangetsu [6.8K]

Answer:

375 K

Explanation:

Using the experssion shown below as:

\Delta G^0=\Delta H^0_{vap}-T\Delta S^0_{vap}

At vaporization point, the liquid and the gaseous phase is in the equilibrium.

Thus,

\Delta G^0=0

So,

Delta H^0_{vap}=T\Delta S^0_{vap}

Given that:

Delta H^0_{vap}=55.5\ kJ/mol

Also, 1 kJ = 10³ J

So,

Delta H^0_{vap}=55500\ J/mol

\Delta S^0_{vap}=148\ J/K.mol

So, temperature is :

T=\frac{Delta H^0_{vap}}{\Delta S^0_{vap}}

T=\frac{55500}{148}

<u>T= 375 K</u>

3 0
3 years ago
Why is it Xe????????????????
Tamiku [17]

Answer:

Here's what I get.

Explanation:

Ba is element 56. Its electron configuration is

1s² 2s²2p⁶ 3s²3p⁶ 4s²3d¹⁰4p⁶ 5s²4d¹⁰5p⁶ 6s²

That's a lot of writing.

To lessen the work, chemists have developed the noble gas notation.

The core electrons of Ba (listed in boldface) have the same electron configuration as Xe, the noble gas found two atoms earlier in the Periodic Table.

Chemists replace the core electron configuration with the symbol of the corresponding noble gas.

The noble gas notation for Ba becomes

Ba: [Xe]6s².

5 0
3 years ago
11. Sound's loudness (or volume) is measured in decisels,<br> A True<br> B. False
bagirrra123 [75]

Answer:

sound loudness is measured in decibels, A. True

7 0
3 years ago
Bromine can be classified as a
sergiy2304 [10]

Answer:

Halogen / salt-former

Explanation:

Bromine is classified as an element in the 'Halogens' section which can be located in group 7 of the Periodic Table. The term "halogen" means "salt-former" and compounds containing halogens are called "salts".

8 0
3 years ago
The two elements discovered by Marie Curie are _____ and _____. uranium curium radium polonium
denpristay [2]
Marie Curie discovered polonium and radium. Hope this helps:))) Please, mark Brainliest!
5 0
2 years ago
Read 2 more answers
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