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2 years ago

How do you expect the size of the atoms to change as you go from neon to argon to krypton

Chemistry

1 answer:

Olenka [21]2 years ago

6 0

Answer:

The number of energy levels will increase.

Explanation:

As they are all Noble Gases, they are all in the same family. However, as you go further down the list of Noble Gases, the period number increases. The period number shows the number of energy levels. Hence, an increase in energy levels.

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The enthalpy change for converting 1.00 mol of ice at -25.0 ∘c to water at 90.0∘c is ________ kj. the specific heats of ice, wat

liubo4ka [24]

Answer : The enthalpy change for converting 1 mole of ice at $-25.0^oC$ to water at $90^oC$ is, 7.712 KJ

Solution :

Process involved in the calculation of enthalpy change :

$(1):ice(-25^oC)\rightarrow ice(0^oC)\\\\(2):ice(0^oC)\rightarrow water(0^oC)\\\\(3):water(0^oC)\rightarrow water(90^oC)$

Now we have to calculate the enthalpy change.

$\Delta H=[m\times c_{ice}\times (T_2-T_1)]+\Delta H_{fusion}+[m\times c_{water}\times (T_3-T_2)]$

where,

$\Delta H$ = enthalpy change

m = mass of water = $1mole\times 18g/mole=18g$

$c_{ice}$ = specific heat of ice = 2.09 J/gk

$c_{water}$ = specific heat of water = 4.18 J/gk

$\Delta H_{fusion}$ = enthalpy change for fusion = 6.01 KJ/mole = 0.00601 J/mole

conversion : $0^oC=273k$

$T_1$ = initial temperature of ice = $0^oC=273k$

$T_2$ = final temperature of ice = $-25^oC=273+(-25)=248k$

$T_3$ = initial temperature of water = $0^oC=273k$

$T_4$ = final temperature of water = $90^oC=273+90=363k$

Now put all the given values in the above expression, we get

$\Delta H=[18g\times 2.09J/gK\times (273-248)k]+0.00601J+[18g\times 4.18J/gK\times (363-273)k]$

$\Delta H=7712.106J=7.712KJ$ (1 KJ = 1000 J)

Therefore, the enthalpy change for converting 1 mole of ice at $-25.0^oC$ to water at $90^oC$ is, 7.712 KJ

3 0

3 years ago

What is the name of the hybrid orbitals used by sulfur in scl2? express your answer in condensed form in order of increasing orb

Marianna [84]

Answer:

sp³

Explanation:

The Lewis structure of SCl₂ is shown below.

The central S atom has two lone pairs and two bonding pairs, for four electron groups.

VSEPR theory predicts that the electron geometry is <em>tetrahedral</em>.

This corresponds to the use of sp³ hybrid orbitals.

7 0

4 years ago

I will give brainliest if answer is good

noname [10]

Microwaves use radiant energy to cook the food. They also use electrical to make the microwave work.

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4 years ago

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Heating a particular ether with HBr yielded a single organic product. Which of the following conclusions can be reached?

saw5 [17]

Only C is correct.

A will produce either an methylbromide + alcohol

B will produce alcohol and alkyl bromide as well

C cyclic ether when reacted with HBr will only produce 1 product which has alcohol group (-OH group) on one end and Bromide group on the other end

8 0

3 years ago

Consider the laboratory on HPLC analysis of components in diet soft drinks. Your standard solutions for caffeine were prepared f

borishaifa [10]

Answer:

i dont know they made me do it! sorry!!!

Explanation:

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3 years ago