true

Take Class 8 Tuition from the Best Tutors

Affordable fees
1-1 or Group class
Flexible Timings
Verified Tutors

Search in

Atom and Molecular numerical Part 5

20/10/2016 0 0

Q. A 0.24 g sample of compound of oxygen and boron was found by analysis to contain 0.096 g of boron and 0.144 g of oxygen. Calculate the percentage composition of the compound by weight.

Ans:

Total mass of Compound = 0.24 g (Given)

Mass of boron = 0.096 g (Given)
Mass of oxygen = 0.144 g (Given)

Thus, percentage of boron by weight in the compound = 0.096 / 0.24 × 100%

= 40%

And, percentage of oxygen by weight in the compound = 0.144 / 0.24 × 100% = 60%

0 Like 0 Dislike

Follow 0

Other Lessons for You

The Noun

The Noun: I. Countable nouns: i. Proper noun: These are the specific names for person, place or things. Eg: Delhi, India, Ravi, Sita, etc. ii. Common noun: These noun show whole category of proper...

Anand B

0 0

What is the difference between compound and complex sentence?

A compound sentence is made up of two or more Principal or Main clauses Example: I went because I was invited. Here, both parts of the sentence(I went.I was invited.)can stand independently and each...

Romila G.

0 0

Is DNA repair enzyme tyrosyl DNA phosphodiesterase 1(TDP1) is a co-target with human DNA topoisomerase I in anticancer therapy?

DNA topoisomerase I (Top1) regulate DNA supercoiling both in the nucleus and mitochondria to enable reliable transmission of our genetic information to the offspring. However, Top1 are toxic when trapped...

Durgapada Rana

0 0

Avery-MacLeod-McCarty experiment. How pneumococcus genetically transformed from avirulent to virulent form?

In 1944, Oswald Avery, Colin MacLeod, and Maclyn McCarty revisited Griffith's experiment and concluded that the transforming material was pure DNA, not protein or RNA. These investigators found that DNA...

Durgapada Rana

0 0

Reading Techniques

Basic Reading Techniques: There are many steps for preparing to study a theory question. First you have read that once fully dont bother if you are not able to understand. Then split that...

Abirami S.

1 0

Find Class VIII near you

Online Tuition Class 8

Looking for Class 8 Tuition ?

Learn from Best Tutors on UrbanPro.

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you

Class 8 Tuition Questions

How to distinguish between metal, non metal by chemical method?

12 Answers

What is error detection?

12 Answers

What is the present situation in Indian education system?

26 Answers

I am Dinesh Krishnan G. I want the students those who have difficulty in physics and I want to improve...

8 Answers

"अध्ययने संलग्नः समभूत् " what is the meaning of this line ?

12 Answers

Looking for Class 8 Tuition Classes?

The best tutors for Class 8 Tuition Classes are on UrbanPro

Select the best Tutor
Book & Attend a Free Demo
Pay and start Learning

Migrate

Class

Subject

Chapter

Migrate to

Concept Solution

Migration Successful

Take Class 8 Tuition with the Best Tutors

The best Tutors for Class 8 Tuition Classes are on UrbanPro

I am a Student I am a Tutor
Name*	Please enter your full name. Please enter institute name.
Email*	Please enter your email address.
Phone*	Please enter a valid phone number.
Location*	Please enter a pincode or area name.
City*	Please enter city name.
Category*	Please enter category.
Gender*	Male Female Please select your gender.
Email ID/ Mobile No.*	Please enter either mobile no. or email.
Enter Password*	Please enter OTP Please enter Password Sorry, this phone number is not verified, Please login with your email Id.