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ElenaW [278]
3 years ago
7

What trend does the first ionization energy follow going across the periodic table?

Chemistry
2 answers:
azamat3 years ago
5 0
The first ionisation energy increase as you go along the periodic table
djyliett [7]3 years ago
4 0

Explanation:

Ionization energy is defined as the energy necessary to remove an electron from a gaseous atom or ion.

Therefore, smaller is the size of an atom or ion more energy it needs to remove an electron because more is the charge on an ion smaller will be its size.

Hence, more will be the attraction between nucleus and valence electrons of the atom. So, more difficulty is faced by the atom to lose an electron. As a result, ionization energy will increase.

Across the period, there will be decrease in size of elements of the periodic table.

Thus, we can conclude that there will be increase in first ionization energy across the periodic table.

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What is the temperature of 0.645 mole of neon in a 2.00 L vessel at 4.68 atm?
storchak [24]

Answer:

—96.03°C

Explanation:

We'll begin by writing out the information provided by the question. This includes:

Number of mole (n) = 0.645 mole

Volume (V) = 2.00 L

Pressure (P) = 4.68 atm

Temperature (T) =?

Recall: that the gas constant = 0.082atm.L/Kmol

With the ideal gas equation PV = nRT, the temperature of the gas can be obtained as follow:

PV = nRT

4.68 x 2 = 0.645 x 0.082 x T

Divide both side 0.645 x 0.082

T = (4.68 x 2) /(0.645 x 0.082)

T = 176.97 K

Now, We can also express the temperature obtained in celsius as shown below:

Temperature (celsius) = temperature (Kelvin) - 273

Temperature (celsius) = 176.97 - 273

Temperature (celsius) = —96.03°C

The temperature of the Neon gas is

—96.03°C

7 0
3 years ago
PLEASE HELP!!!!
Lyrx [107]
Possible answer could be: P/T = k
3 0
3 years ago
Read 2 more answers
What determines whether an object will scatter light or reflect light?
Masteriza [31]
Other factors that affect how much light<span> is absorbed, reflected and </span>scattered concerns<span> the </span>light<span> itself and how it arrived at the surface of the </span>object<span>, such as the wavelength (color) of the </span>light<span>, and. the angle at which it reaches the surface.</span>
4 0
3 years ago
Which action must occur for an enzyme to catalyze a chemical reaction?
Butoxors [25]

Answer:

correct substrate to bind the active site of the enzyme.

Explanation:

For an enzyme to catalyze a chemical reaction it is very essential for the correct substrate to bind the active site of the enzyme.

The Active site consists of two parts

1.Binding site

2. Catalytic site

The binding site consists of amino acid residues that bind to the correct substrate while the catalytic site has the amino acids that lead to the catalysis.

The active site's shape is such that only the right substratum easily binds to it and thus the catalytic reaction occurs.

4 0
3 years ago
How much heat is required to raise the temperature of 10.35g of CCl4 from 32.1°c to 56.4°c
Travka [436]
We are going to use this formula:

Q = M*C*ΔT

when Q is the heat required 

M is the mass of CCl4 = 10.35 g

C is the specific heat capacity of CCl4 = 0.874J/g.c

and ΔT the change in temperature = 56.4 - 32.1 °C =24.3 °C

∴ Q = 10.35g * 0.874 * 24.3 °C

       = 219.8 J
4 0
3 years ago
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