Question

निम्नलिखित में मोलों की संख्या का परिकलन
कीजिए
| () 52 g हीलियम (द्रव्यमान से मोल प्राप्त
कीजिए।
| (ii) 12.044 x 1023 हीलियम परमाणुओं की
संख्या (कणों की संख्या से मोल प्राप्त
कीजिए।​

Answer 1

1) The moles of given amount of helium are 13 moles

2) The moles of helium element for the given number of atoms are 2 moles

Explanation:

• For 1:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Given mass of helium = 52 g

Molar mass of titanium = 4 g/mol

Putting values in above equation, we get:

$\text{Moles of helium}=\frac{52g}{4g/mol}=13mol$

• For 2:

We are given:

Number of atoms of helium = $12.044\times 10^{23}$

According to mole concept:

$6.022\times 10^{23}$ number of atoms are present in 1 mole of an element

So, $12.044\times 10^{23}$ number of atoms will be present in = $\frac{1}{6.022\times 10^{23}}\times 12.044\times 10^{23}=2mol$ of helium element

Learn more about number of moles and mole concept:

https://brainly.in/question/13125138

https://brainly.in/question/6813757

#learnwithbrainly

Answer 2

Explanation:

48 gram helium mein molo ki sankhya ka parikalan kijiye helium ka parmanu dravyaman 4 unit