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4 years ago

2 different elements have the same number of neutrons

Chemistry

1 answer:

Levart [38]4 years ago

3 0

Answer:

Sodium and Magnesium are the two different element having same number of neutrons.

Explanation:

Neutron:

It is a subatomic particle,but without an electric charge,present in all the atomic nuclei except those of ordinary hydrogen.

Its symbol is n with no charge on it.

sodium and magnesium have the same number of neutrons.

name of the element : Sodium

symbol: Na

atomic number: 11

number of protons: 11

number of neutrons: 12

number of electrons: 11

distribution of electrons: 2 , 8 , 1

valency: 1

name of the element : Magnesium

symbol: Mg.

atomic number: 12

number of protons: 12

number of neutrons: 12

number of electrons: 12

distribution of electrons: 2 , 8 , 2

valency: 2

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4 years ago

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<u>Answer:</u> The molar mass of the unknown protein is 6387.9 g/mol

<u>Explanation:</u>

To calculate the concentration of solute, we use the equation for osmotic pressure, which is:

$\pi=iMRT$

or,

$\pi=i\times \frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}\times RT$

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Molar mass of protein = ?

Volume of solution = 5.00 mL

R = Gas constant = $0.0821\text{ L atm }mol^{-1}K^{-1}$

T = temperature of the solution = $25^oC=[25+273]K=298K$

Putting values in above equation, we get:

$0.0766atm=1\times \frac{0.100\times 1000}{\text{Molar mass of protein}\times 5}\times 0.0821\text{ L. atm }mol^{-1}K^{-1}\times 298K\\\\\pi=\frac{1\times 0.100\times 1000\times 0.0821\times 298}{0.0766\times 5}=6387.9g/mol$

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4 years ago

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3 years ago

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neonofarm [45]

Answer:

The answer is "237.247".

Explanation:

SI Unit:

This is an acronym of the word Système International in French. Its International System of Units (SI) is a metric system that would be universally acknowledged as a measurement standard. SI units play an important function in research and innovation in science and technology. In this, the temperature will be measure in the kelvin.

Conversion $^{\circ} \ to \ K$ :

let,

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3 years ago

2 different elements have the same number of neutrons​

2 different elements have the same number of neutrons