No products in the cart.

How many atoms of Na will …

CBSE, JEE, NEET, CUET

Question Bank, Mock Tests, Exam Papers

NCERT Solutions, Sample Papers, Notes, Videos

Install Now

How many atoms of Na will be there in 11.5 g of sample

Posted by P A 3 years, 9 months ago

CBSE > Class 09 > Science

2 answers

Yogita Ingle 3 years, 9 months ago

Molar mass of Na=23g/mol

no. of moles = weight/molar mass

n = 11.5/23

no. of moles = 0.5

no. of moles = no. of atoms/avogadro’s number

0.5 = no. of atoms/6.022*10^23

0.5*6.022*10^23 atoms = no. of atoms

3.011*10^23 atoms.

So there are 3.011*10^23 atoms present in 11.5g of sodium sample.

0Thank You

Gaurav Seth 3 years, 9 months ago

Explanation:

Molar mass of Na=23g/mol

no. of moles = weight/molar mass

n = 11.5/23

no. of moles = 0.5

no. of moles = no. of atoms/avogadro’s number

0.5 = no. of atoms/6.022*10^23

0.5*6.022*10^23 atoms = no. of atoms

3.011*10^23 atoms.

So there are 3.011*10^23 atoms present in 11.5g of sodium sample

0Thank You

ANSWER

Related Questions

This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

Few rules to keep homework help section safe, clean and informative.

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
Ask specific question which are clear and concise.

Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

Posted by Abhi Sandhu 1 month, 4 weeks ago

CBSE > Class 09 > Science

1 answers

What are the parts of a flower

Posted by Op Garg 2 months, 1 week ago

CBSE > Class 09 > Science

2 answers

A boxer moves his head backward when his opponent blows a punch.

Posted by Mukesh Mendon 2 months ago

CBSE > Class 09 > Science

1 answers

Assertion:Sun appears to rise in the east and set in the west Reason:The earth revolves around the sun in uniform circular motion

Posted by Tejal Sawant 2 months, 1 week ago

CBSE > Class 09 > Science

3 answers

Why is it advised to tie any luggage kept on the roof of a bus with a rope ?

Posted by Huda Fatima 2 months, 1 week ago

CBSE > Class 09 > Science

2 answers

If one mole of carbon atoms weighs 12 grams, what is the mass (in grams) of 1 atom of carbon?

Posted by Anmol Kumar 2 months, 1 week ago

CBSE > Class 09 > Science

0 answers

WHAT IS UNIT OF LIFE

Posted by Yash Dwivedi 2 months, 1 week ago

CBSE > Class 09 > Science

3 answers

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
Ask specific question which are clear and concise.

Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

Posted by Samir Chakma 1 month ago

CBSE > Class 09 > Science