The non-contact forces portfolio please help I'm just confused about what I'm supposed to do.

Chemistry

1 answer:

MatroZZZ [7]2 years ago

8 0

The non-contact forces portfolio includes Gravitational force, Magnetic force and Electrostatic force.

<h3>What is non contact force?</h3>

Non contact forces are those forces which are applied on any object without any physical interference or contact.

Some non-contact forces are:

Gravitational force: It acts between two objects and depends on the masses of the object and distance between that objects.
Magnetic force: It acts due to the motion of the charged particles.
Electrostatic force: It is a type of induced force which is generated due to rubbing of two objects but when it is generated it remains even after removing the contact of previous objects.

Hence Gravitational force, Magnetic force and Electrostatic force are the non-contact forces.

To know more about non contact forces, visit the below link:

brainly.com/question/18451249

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How many molecules in 3.4 moles of NH4NO3?

aliya0001 [1]

There are 20.5 x 10^24 molecules are present in 3.4 moles of NH4NO3.

<h3>How many molecules in 3.4 moles of NH4NO3?</h3>

We know that one mole of a substance has 6.022 × 10²³ molecules so in 3.4 moles of NH4NO3, we have 20.5 x 10^24 molecules if we multiply the 6.022 × 10²³ with 3.4.

So we can conclude that there are 20.5 x 10^24 molecules are present in 3.4 moles of NH4NO3.

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3 years ago

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The ionization energies of Calcium are (in KJ/mol): 1st: 589.8 2nd: 1145.4 3rd: 4912.4

defon

Answer:

See whole explanation to understand

Explanation:

the reason why there is such a large jump from 2nd to 3rd ionization energy for calcium is because to remove the third electron, a larger amount of energy is required, since the shell is closer to the nucleus, and higher attraction exists between them. This is why the second ionization energy is 1125.4 and then the third IE is 4912.4 which is a very big difference. It's all about the elections and energy!!

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Solid sodium reacts violently with water, producing heat, hydrogen gas, and sodium hydroxide. How many molecules of hydrogen gas

Zinaida [17]

Answer: Number of molecules of hydrogen gas $6.32\times 10^{32}$

Explanation:

$2Na+2H_2O\rightarrow 2NaOH+H_2$

Number of moles of sodium = $\frac{\text{mass of sodium}}{\text{molar mass of sodium}}=\frac{48.7 g}{23 g/mol}=2.11mol$

According to reaction , 2 moles of sodium produces 1 mole of hydrogen gas , then 2.11 mol of sodium will= $\frac{1}{2}\times 2.11 mol$ of hydrogen gas that is 1.05 moles of hydrogen gas.