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2 years ago

Why cesium requires little energy to realease itsone electron present in the outermost shell

1 answer:

3 0

Releasing its electron is ionization energy which increases across the period so it has the smallest and since it is just one electron, it uses little energy.

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Ratio of atoms in Hydrochloric acid

Lesechka [4]

One to one ratio

The formula of hydrochloric acid is HCl so there is one atomic of hydrogen and one atom of oxygen

7 0

2 years ago

What forces must be overcome for a substance to melt

olga_2 [115]

Intermolecular forces.

5 0

3 years ago

A box has a mass of 5 kg. What is the weight of the box on Earth?

dimaraw [331]

Answer:

Given that W=mg:

The weight of the box would be 50 N taking the value of 'g' as 10ms-2. Taking the value of 'g' as 9.8ms-2, the weight of the box would be 49 N.

(N = Newtons)

8 0

2 years ago

Determine the boiling point of a 3.70 m solution of phenol in benzene. Benzene has a boiling point of 80.1°C and a boiling point

xeze [42]

Answer: The boiling point of a 3.70 m solution of phenol in benzene is $89.5^0C$

Explanation:

Elevation in boiling point:

$\Delta T_b=i\times k_b\times m$

where,

$\Delta T_b$ = change in boiling point

i= vant hoff factor = 1 (for benzene which is a non electrolyte )

$k_b$ = boiling point constant = $2.53^0C/kgmol$

m = molality = 3.70

$T_{solution}-T_{solvent}=i\times k_b\times m$

$T_{solution}-80.1^0C=1\times 2.53\times 3.70$

$T_{solution}=89.5^0C$

Thus the boiling point of a 3.70 m solution of phenol in benzene is $89.5^0C$

8 0

2 years ago

Can someone help me identify the elements please, i rlly need help

rewona [7]

Answer:

1 : any of more than 100 substances that cannot by ordinary chemical means be separated into different substances Gold and carbon are elements. 2 : one of the parts of which something is made up There is an element of risk in surfing. 3 : the simplest principles of a subject of study the elements of arithmetic.

Explanation:

7 0

2 years ago